diff --git a/.gitignore b/.gitignore
index 4ce5750..614da9b 100644
--- a/.gitignore
+++ b/.gitignore
@@ -14,7 +14,7 @@ dist/
 downloads/
 eggs/
 .eggs/
-lib/
+#lib/
 lib64/
 parts/
 sdist/
diff --git a/.gitmodules b/.gitmodules
deleted file mode 100644
index c34cc6f..0000000
--- a/.gitmodules
+++ /dev/null
@@ -1,3 +0,0 @@
-[submodule "frontend/extras"]
-	path = frontend/extras
-	url = https://git.neulandlabor.de/j3d1/vue-extras.git
diff --git a/deploy/dev/Dockerfile.frontend b/deploy/dev/Dockerfile.frontend
index 02b9e79..cdba36e 100644
--- a/deploy/dev/Dockerfile.frontend
+++ b/deploy/dev/Dockerfile.frontend
@@ -9,7 +9,7 @@ RUN mkdir /git
 # A wildcard is used to ensure both package.json AND package-lock.json are copied
 COPY package.json ./
 
-COPY extras/ ./extras/
+#COPY extras/ ./extras/
 RUN npm install
 
 CMD [ "npm", "run", "dev", "--", "--host"]
diff --git a/deploy/prod/Dockerfile.frontend b/deploy/prod/Dockerfile.frontend
index 1def462..fb16084 100644
--- a/deploy/prod/Dockerfile.frontend
+++ b/deploy/prod/Dockerfile.frontend
@@ -15,7 +15,7 @@ ARG GIT_COMMIT=unknown
 ENV GIT_COMMIT=$GIT_COMMIT
 
 COPY package.json package-lock.json ./
-COPY extras/ ./extras/
+#COPY extras/ ./extras/
 RUN npm ci
 COPY . .
 RUN npm run build
diff --git a/frontend/extras b/frontend/extras
deleted file mode 160000
index 21bf28a..0000000
--- a/frontend/extras
+++ /dev/null
@@ -1 +0,0 @@
-Subproject commit 21bf28a8b6293872f5f7a42c9ca0bc12ede5aaae
diff --git a/frontend/package-lock.json b/frontend/package-lock.json
index 9a3cb1d..fb906ae 100644
--- a/frontend/package-lock.json
+++ b/frontend/package-lock.json
@@ -197,6 +197,93 @@
         "strip-ansi-cjs": "npm:strip-ansi@^6.0.1",
         "wrap-ansi": "^8.1.0",
         "wrap-ansi-cjs": "npm:wrap-ansi@^7.0.0"
+      },
+      "dependencies": {
+        "ansi-regex": {
+          "version": "5.0.1",
+          "resolved": "https://registry.npmjs.org/ansi-regex/-/ansi-regex-5.0.1.tgz",
+          "integrity": "sha512-quJQXlTSUGL2LH9SUXo8VwsY4soanhgo6LNSm84E1LBcE8s3O0wpdiRzyR9z/ZZJMlMWv37qOOb9pdJlMUEKFQ==",
+          "dev": true
+        },
+        "ansi-styles": {
+          "version": "4.3.0",
+          "resolved": "https://registry.npmjs.org/ansi-styles/-/ansi-styles-4.3.0.tgz",
+          "integrity": "sha512-zbB9rCJAT1rbjiVDb2hqKFHNYLxgtk8NURxZ3IZwD3F6NtxbXZQCnnSi1Lkx+IDohdPlFp222wVALIheZJQSEg==",
+          "dev": true,
+          "requires": {
+            "color-convert": "^2.0.1"
+          }
+        },
+        "emoji-regex": {
+          "version": "8.0.0",
+          "resolved": "https://registry.npmjs.org/emoji-regex/-/emoji-regex-8.0.0.tgz",
+          "integrity": "sha512-MSjYzcWNOA0ewAHpz0MxpYFvwg6yjy1NG3xteoqz644VCo/RPgnr1/GGt+ic3iJTzQ8Eu3TdM14SawnVUmGE6A==",
+          "dev": true
+        },
+        "string-width-cjs": {
+          "version": "npm:string-width@4.2.3",
+          "resolved": "https://registry.npmjs.org/string-width/-/string-width-4.2.3.tgz",
+          "integrity": "sha512-wKyQRQpjJ0sIp62ErSZdGsjMJWsap5oRNihHhu6G7JVO/9jIB6UyevL+tXuOqrng8j/cxKTWyWUwvSTriiZz/g==",
+          "dev": true,
+          "requires": {
+            "emoji-regex": "^8.0.0",
+            "is-fullwidth-code-point": "^3.0.0",
+            "strip-ansi": "^6.0.1"
+          },
+          "dependencies": {
+            "strip-ansi": {
+              "version": "6.0.1",
+              "resolved": "https://registry.npmjs.org/strip-ansi/-/strip-ansi-6.0.1.tgz",
+              "integrity": "sha512-Y38VPSHcqkFrCpFnQ9vuSXmquuv5oXOKpGeT6aGrr3o3Gc9AlVa6JBfUSOCnbxGGZF+/0ooI7KrPuUSztUdU5A==",
+              "dev": true,
+              "requires": {
+                "ansi-regex": "^5.0.1"
+              }
+            }
+          }
+        },
+        "strip-ansi-cjs": {
+          "version": "npm:strip-ansi@6.0.1",
+          "resolved": "https://registry.npmjs.org/strip-ansi/-/strip-ansi-6.0.1.tgz",
+          "integrity": "sha512-Y38VPSHcqkFrCpFnQ9vuSXmquuv5oXOKpGeT6aGrr3o3Gc9AlVa6JBfUSOCnbxGGZF+/0ooI7KrPuUSztUdU5A==",
+          "dev": true,
+          "requires": {
+            "ansi-regex": "^5.0.1"
+          }
+        },
+        "wrap-ansi-cjs": {
+          "version": "npm:wrap-ansi@7.0.0",
+          "resolved": "https://registry.npmjs.org/wrap-ansi/-/wrap-ansi-7.0.0.tgz",
+          "integrity": "sha512-YVGIj2kamLSTxw6NsZjoBxfSwsn0ycdesmc4p+Q21c5zPuZ1pl+NfxVdxPtdHvmNVOQ6XSYG4AUtyt/Fi7D16Q==",
+          "dev": true,
+          "requires": {
+            "ansi-styles": "^4.0.0",
+            "string-width": "^4.1.0",
+            "strip-ansi": "^6.0.0"
+          },
+          "dependencies": {
+            "string-width": {
+              "version": "4.2.3",
+              "resolved": "https://registry.npmjs.org/string-width/-/string-width-4.2.3.tgz",
+              "integrity": "sha512-wKyQRQpjJ0sIp62ErSZdGsjMJWsap5oRNihHhu6G7JVO/9jIB6UyevL+tXuOqrng8j/cxKTWyWUwvSTriiZz/g==",
+              "dev": true,
+              "requires": {
+                "emoji-regex": "^8.0.0",
+                "is-fullwidth-code-point": "^3.0.0",
+                "strip-ansi": "^6.0.1"
+              }
+            },
+            "strip-ansi": {
+              "version": "6.0.1",
+              "resolved": "https://registry.npmjs.org/strip-ansi/-/strip-ansi-6.0.1.tgz",
+              "integrity": "sha512-Y38VPSHcqkFrCpFnQ9vuSXmquuv5oXOKpGeT6aGrr3o3Gc9AlVa6JBfUSOCnbxGGZF+/0ooI7KrPuUSztUdU5A==",
+              "dev": true,
+              "requires": {
+                "ansi-regex": "^5.0.1"
+              }
+            }
+          }
+        }
       }
     },
     "@jridgewell/sourcemap-codec": {
@@ -887,9 +974,6 @@
       "integrity": "sha512-kVscqXk4OCp68SZ0dkgEKVi6/8ij300KBWTJq32P/dYeWTSwK41WyTxalN1eRmA5Z9UU/LX9D7FWSmV9SAYx6g==",
       "dev": true
     },
-    "extras": {
-      "version": "file:extras"
-    },
     "fast-diff": {
       "version": "1.3.0",
       "resolved": "https://registry.npmjs.org/fast-diff/-/fast-diff-1.3.0.tgz",
@@ -1620,40 +1704,6 @@
         "strip-ansi": "^7.0.1"
       }
     },
-    "string-width-cjs": {
-      "version": "npm:string-width@4.2.3",
-      "resolved": "https://registry.npmjs.org/string-width/-/string-width-4.2.3.tgz",
-      "integrity": "sha512-wKyQRQpjJ0sIp62ErSZdGsjMJWsap5oRNihHhu6G7JVO/9jIB6UyevL+tXuOqrng8j/cxKTWyWUwvSTriiZz/g==",
-      "dev": true,
-      "requires": {
-        "emoji-regex": "^8.0.0",
-        "is-fullwidth-code-point": "^3.0.0",
-        "strip-ansi": "^6.0.1"
-      },
-      "dependencies": {
-        "ansi-regex": {
-          "version": "5.0.1",
-          "resolved": "https://registry.npmjs.org/ansi-regex/-/ansi-regex-5.0.1.tgz",
-          "integrity": "sha512-quJQXlTSUGL2LH9SUXo8VwsY4soanhgo6LNSm84E1LBcE8s3O0wpdiRzyR9z/ZZJMlMWv37qOOb9pdJlMUEKFQ==",
-          "dev": true
-        },
-        "emoji-regex": {
-          "version": "8.0.0",
-          "resolved": "https://registry.npmjs.org/emoji-regex/-/emoji-regex-8.0.0.tgz",
-          "integrity": "sha512-MSjYzcWNOA0ewAHpz0MxpYFvwg6yjy1NG3xteoqz644VCo/RPgnr1/GGt+ic3iJTzQ8Eu3TdM14SawnVUmGE6A==",
-          "dev": true
-        },
-        "strip-ansi": {
-          "version": "6.0.1",
-          "resolved": "https://registry.npmjs.org/strip-ansi/-/strip-ansi-6.0.1.tgz",
-          "integrity": "sha512-Y38VPSHcqkFrCpFnQ9vuSXmquuv5oXOKpGeT6aGrr3o3Gc9AlVa6JBfUSOCnbxGGZF+/0ooI7KrPuUSztUdU5A==",
-          "dev": true,
-          "requires": {
-            "ansi-regex": "^5.0.1"
-          }
-        }
-      }
-    },
     "strip-ansi": {
       "version": "7.2.0",
       "resolved": "https://registry.npmjs.org/strip-ansi/-/strip-ansi-7.2.0.tgz",
@@ -1663,23 +1713,6 @@
         "ansi-regex": "^6.2.2"
       }
     },
-    "strip-ansi-cjs": {
-      "version": "npm:strip-ansi@6.0.1",
-      "resolved": "https://registry.npmjs.org/strip-ansi/-/strip-ansi-6.0.1.tgz",
-      "integrity": "sha512-Y38VPSHcqkFrCpFnQ9vuSXmquuv5oXOKpGeT6aGrr3o3Gc9AlVa6JBfUSOCnbxGGZF+/0ooI7KrPuUSztUdU5A==",
-      "dev": true,
-      "requires": {
-        "ansi-regex": "^5.0.1"
-      },
-      "dependencies": {
-        "ansi-regex": {
-          "version": "5.0.1",
-          "resolved": "https://registry.npmjs.org/ansi-regex/-/ansi-regex-5.0.1.tgz",
-          "integrity": "sha512-quJQXlTSUGL2LH9SUXo8VwsY4soanhgo6LNSm84E1LBcE8s3O0wpdiRzyR9z/ZZJMlMWv37qOOb9pdJlMUEKFQ==",
-          "dev": true
-        }
-      }
-    },
     "strip-literal": {
       "version": "1.3.0",
       "resolved": "https://registry.npmjs.org/strip-literal/-/strip-literal-1.3.0.tgz",
@@ -1977,60 +2010,6 @@
         "strip-ansi": "^7.0.1"
       }
     },
-    "wrap-ansi-cjs": {
-      "version": "npm:wrap-ansi@7.0.0",
-      "resolved": "https://registry.npmjs.org/wrap-ansi/-/wrap-ansi-7.0.0.tgz",
-      "integrity": "sha512-YVGIj2kamLSTxw6NsZjoBxfSwsn0ycdesmc4p+Q21c5zPuZ1pl+NfxVdxPtdHvmNVOQ6XSYG4AUtyt/Fi7D16Q==",
-      "dev": true,
-      "requires": {
-        "ansi-styles": "^4.0.0",
-        "string-width": "^4.1.0",
-        "strip-ansi": "^6.0.0"
-      },
-      "dependencies": {
-        "ansi-regex": {
-          "version": "5.0.1",
-          "resolved": "https://registry.npmjs.org/ansi-regex/-/ansi-regex-5.0.1.tgz",
-          "integrity": "sha512-quJQXlTSUGL2LH9SUXo8VwsY4soanhgo6LNSm84E1LBcE8s3O0wpdiRzyR9z/ZZJMlMWv37qOOb9pdJlMUEKFQ==",
-          "dev": true
-        },
-        "ansi-styles": {
-          "version": "4.3.0",
-          "resolved": "https://registry.npmjs.org/ansi-styles/-/ansi-styles-4.3.0.tgz",
-          "integrity": "sha512-zbB9rCJAT1rbjiVDb2hqKFHNYLxgtk8NURxZ3IZwD3F6NtxbXZQCnnSi1Lkx+IDohdPlFp222wVALIheZJQSEg==",
-          "dev": true,
-          "requires": {
-            "color-convert": "^2.0.1"
-          }
-        },
-        "emoji-regex": {
-          "version": "8.0.0",
-          "resolved": "https://registry.npmjs.org/emoji-regex/-/emoji-regex-8.0.0.tgz",
-          "integrity": "sha512-MSjYzcWNOA0ewAHpz0MxpYFvwg6yjy1NG3xteoqz644VCo/RPgnr1/GGt+ic3iJTzQ8Eu3TdM14SawnVUmGE6A==",
-          "dev": true
-        },
-        "string-width": {
-          "version": "4.2.3",
-          "resolved": "https://registry.npmjs.org/string-width/-/string-width-4.2.3.tgz",
-          "integrity": "sha512-wKyQRQpjJ0sIp62ErSZdGsjMJWsap5oRNihHhu6G7JVO/9jIB6UyevL+tXuOqrng8j/cxKTWyWUwvSTriiZz/g==",
-          "dev": true,
-          "requires": {
-            "emoji-regex": "^8.0.0",
-            "is-fullwidth-code-point": "^3.0.0",
-            "strip-ansi": "^6.0.1"
-          }
-        },
-        "strip-ansi": {
-          "version": "6.0.1",
-          "resolved": "https://registry.npmjs.org/strip-ansi/-/strip-ansi-6.0.1.tgz",
-          "integrity": "sha512-Y38VPSHcqkFrCpFnQ9vuSXmquuv5oXOKpGeT6aGrr3o3Gc9AlVa6JBfUSOCnbxGGZF+/0ooI7KrPuUSztUdU5A==",
-          "dev": true,
-          "requires": {
-            "ansi-regex": "^5.0.1"
-          }
-        }
-      }
-    },
     "ws": {
       "version": "8.21.3",
       "resolved": "https://registry.npmjs.org/ws/-/ws-8.21.3.tgz",
diff --git a/frontend/package.json b/frontend/package.json
index bff1287..1fac118 100644
--- a/frontend/package.json
+++ b/frontend/package.json
@@ -17,7 +17,6 @@
     "vue-multiselect": "^2.1.7",
     "vue-router": "^4.1.6",
     "vuex": "^4.1.0",
-    "extras": "file:./extras",
     "jquery": "^3.6.0",
     "popper.js": "^1.16.1"
   },
diff --git a/frontend/src/components/CombinedFileField.vue b/frontend/src/components/CombinedFileField.vue
index d8d1aec..0dcb058 100644
--- a/frontend/src/components/CombinedFileField.vue
+++ b/frontend/src/components/CombinedFileField.vue
@@ -14,7 +14,7 @@
         <div style="position: relative;">
             <div class="image-list">
                 <deletable-wrapper v-for="file in only_images(item_files).filter(file => file.owner)" :key="file.id"
-                                   @delete="deleteFile(file)">
+                                   confirm-message="Delete this file? This cannot be undone." @delete="deleteFile(file)">
                     <authenticated-image :src="file.name" :owner="file.owner" class="img-thumbnail"/>
                 </deletable-wrapper>
                 <deletable-wrapper v-for="file in only_images(item_files).filter(file => file.data)" :key="file.id"
diff --git a/frontend/src/components/DeletableWrapper.vue b/frontend/src/components/DeletableWrapper.vue
index d357a01..6b77249 100644
--- a/frontend/src/components/DeletableWrapper.vue
+++ b/frontend/src/components/DeletableWrapper.vue
@@ -26,9 +26,17 @@ export default {
     components: {
         ...BIcons
     },
+    props: {
+        // No confirmation when omitted - e.g. removing a not-yet-saved staged file, see CombinedFileField.vue's deleteTempFile.
+        confirmMessage: {
+            type: String,
+            default: null
+        }
+    },
     emits: ["delete"],
     methods: {
         triggerDelete() {
+            if (this.confirmMessage && !confirm(this.confirmMessage)) return;
             this.$emit("delete");
         }
     }
diff --git a/frontend/src/short-id.js b/frontend/src/lib/short-id.js
similarity index 100%
rename from frontend/src/short-id.js
rename to frontend/src/lib/short-id.js
diff --git a/frontend/src/router.js b/frontend/src/router.js
index de14c21..f75a29f 100644
--- a/frontend/src/router.js
+++ b/frontend/src/router.js
@@ -30,7 +30,7 @@ import ShortId from '@/views/ShortId.vue';
 import {
     encodeShortId, serializeShortId, decodeShortId, deserializeShortId,
     isDomainQualifiedShortId, decodeDomainQualifiedShortId
-} from '@/short-id';
+} from '@/lib/short-id';
 
 import Account from '@/views/settings/Account.vue';
 import Password from '@/views/settings/Password.vue';
diff --git a/frontend/src/views/Files.vue b/frontend/src/views/Files.vue
index 5e47f82..83ef4fc 100644
--- a/frontend/src/views/Files.vue
+++ b/frontend/src/views/Files.vue
@@ -9,7 +9,7 @@
                     </div>
                     <div class="card-body">
                         <span v-for="file in only_images(files)" :key="file.id">
-                            <deletable-wrapper @delete="deleteFile(file)">
+                            <deletable-wrapper confirm-message="Delete this file? This cannot be undone." @delete="deleteFile(file)">
                                 <authenticated-image :src="thumbnailPathForHash(file.hash)" :owner="file.owner"
                                                      class="img-thumbnail"/>
                             </deletable-wrapper>
diff --git a/frontend/src/views/Friends.vue b/frontend/src/views/Friends.vue
index 0449131..3e2bc30 100644
--- a/frontend/src/views/Friends.vue
+++ b/frontend/src/views/Friends.vue
@@ -173,6 +173,7 @@ export default {
             })
         },
         tryDropFriend(friend) {
+            if (!confirm(`Are you sure you want to remove "${friend.handle}" as a friend?`)) return
             this.dropFriend(friend).then((ok) => {
                 if (ok) {
                     delete this.friends[friend.handle]
diff --git a/frontend/src/views/GroupDetail.vue b/frontend/src/views/GroupDetail.vue
index e50f6da..8e16884 100644
--- a/frontend/src/views/GroupDetail.vue
+++ b/frontend/src/views/GroupDetail.vue
@@ -107,6 +107,7 @@ export default {
             })
         },
         tryRemoveMember(member) {
+            if (!confirm(`Are you sure you want to remove "${member.handle}" from ${this.group.handle}?`)) return
             this.removeGroupMember({groupHandle: this.group.handle, identityId: member.id})
                 .then(() => {
                     this.refresh()
diff --git a/frontend/src/views/Inventory.vue b/frontend/src/views/Inventory.vue
index 8b6ba4b..05b3121 100644
--- a/frontend/src/views/Inventory.vue
+++ b/frontend/src/views/Inventory.vue
@@ -196,6 +196,7 @@ export default {
             return this.fetchFriendInventoryItems({friendHandle: this.selectedOwner})
         },
         tryDeleteItem(item) {
+            if (!confirm(`Are you sure you want to delete "${item.name}"? This cannot be undone.`)) return
             this.deleteInventoryItem(item).then(() => {
                 this.fetchItemsForOwner()
             })
diff --git a/frontend/src/views/InventoryDetail.vue b/frontend/src/views/InventoryDetail.vue
index 8d41d8c..19d37e9 100644
--- a/frontend/src/views/InventoryDetail.vue
+++ b/frontend/src/views/InventoryDetail.vue
@@ -46,7 +46,7 @@
                             Edit
                         </button>
                         <button type="submit" class="btn btn-danger"
-                                @click="deleteInventoryItem(item).then(() => $router.push(ownerOverviewRoute(item)))">
+                                @click="tryDeleteItem">
                             <b-icon-trash></b-icon-trash>
                             Delete
                         </button>
@@ -116,6 +116,10 @@ export default {
         ...mapActions(["fetchItemByHandle", "deleteInventoryItem", "fetchGroupMemberships"]),
         async loadItem() {
             this.item = await this.fetchItemByHandle({handle: this.decodedHandle, id: this.id}) || {}
+        },
+        tryDeleteItem() {
+            if (!confirm(`Are you sure you want to delete "${this.item.name}"? This cannot be undone.`)) return
+            this.deleteInventoryItem(this.item).then(() => this.$router.push(ownerOverviewRoute(this.item)))
         }
     },
     watch: {
diff --git a/frontend/src/views/StorageLocation.vue b/frontend/src/views/StorageLocation.vue
index 496b2e3..e8d5f35 100644
--- a/frontend/src/views/StorageLocation.vue
+++ b/frontend/src/views/StorageLocation.vue
@@ -184,6 +184,7 @@ export default {
                 : this.fetchGroupStorageLocations({groupHandle: this.selectedOwner})
         },
         tryDeleteLocation(location) {
+            if (!confirm(`Are you sure you want to delete "${location.name}"? This cannot be undone.`)) return
             this.deleteStorageLocation(location).then(() => {
                 this.fetchLocationsForOwner()
             })
diff --git a/frontend/src/views/StorageLocationDetail.vue b/frontend/src/views/StorageLocationDetail.vue
index 19e2412..0c3d532 100644
--- a/frontend/src/views/StorageLocationDetail.vue
+++ b/frontend/src/views/StorageLocationDetail.vue
@@ -39,7 +39,7 @@
                             Edit
                         </button>
                         <button type="submit" class="btn btn-danger"
-                                @click="deleteStorageLocation(location).then(() => $router.push(ownerLocationOverviewRoute(location)))">
+                                @click="tryDeleteLocation">
                             <b-icon-trash></b-icon-trash>
                             Delete
                         </button>
@@ -103,6 +103,10 @@ export default {
         ...mapActions(["fetchStorageLocationByHandle", "deleteStorageLocation", "fetchGroupMemberships"]),
         async loadLocation() {
             this.location = await this.fetchStorageLocationByHandle({handle: this.decodedHandle, id: this.id}) || {}
+        },
+        tryDeleteLocation() {
+            if (!confirm(`Are you sure you want to delete "${this.location.name}"? This cannot be undone.`)) return
+            this.deleteStorageLocation(this.location).then(() => this.$router.push(ownerLocationOverviewRoute(this.location)))
         }
     },
     watch: {
diff --git a/frontend/src/views/WorkflowDetail.vue b/frontend/src/views/WorkflowDetail.vue
index 9d9596f..ee0d6c8 100644
--- a/frontend/src/views/WorkflowDetail.vue
+++ b/frontend/src/views/WorkflowDetail.vue
@@ -416,6 +416,8 @@ export default {
         },
 
         async abortWorkflow() {
+            const displayName = this.getWorkflowDisplayName || this.workflowInstance.title;
+            if (!confirm(`Are you sure you want to abort "${displayName}"?`)) return;
             try {
                 this.loading = true;
                 await this.deleteWorkflow(this.workflowInstance.id);
diff --git a/frontend/src/views/settings/Account.vue b/frontend/src/views/settings/Account.vue
index 36e39a0..83ce506 100644
--- a/frontend/src/views/settings/Account.vue
+++ b/frontend/src/views/settings/Account.vue
@@ -130,6 +130,7 @@ export default {
             await this.updateUserProfilePicture({file: image});
         },
         async removePicture() {
+            if (!confirm('Are you sure you want to remove your profile picture?')) return;
             await this.updateUserProfilePicture({file: null});
         }
     },