Bootstrap5 (#17)

* Bootstrap5 migration

static/css/bootstrap-multiselect.css

@@ -1,8 +1,44 @@
-/**
- * Bootstrap Multiselect 0.9.16 (http://davidstutz.de/bootstrap-multiselect/)
+ /**
+ * Bootstrap Multiselect 1.0.1 (05.07.2021) (http://davidstutz.de/bootstrap-multiselect/)
  *
  * Apache License, Version 2.0:
- * Copyright (c) 2012 - 2018 David Stutz
+ * Copyright (c) 2012 - 2021 David Stutz
  *
+ * Licensed under the Apache License, Version 2.0 (the "License"); you may not
+ * use this file except in compliance with the License. You may obtain a
+ * copy of the License at http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+ * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+ * License for the specific language governing permissions and limitations
+ * under the License.
+ *
+ * BSD 3-Clause License:
+ * Copyright (c) 2012 - 2021 David Stutz
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *    - Redistributions of source code must retain the above copyright notice,
+ *      this list of conditions and the following disclaimer.
+ *    - Redistributions in binary form must reproduce the above copyright notice,
+ *      this list of conditions and the following disclaimer in the documentation
+ *      and/or other materials provided with the distribution.
+ *    - Neither the name of David Stutz nor the names of its contributors may be
+ *      used to endorse or promote products derived from this software without
+ *      specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
+ * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
+ * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
+ * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+ * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
- span.multiselect-native-select{position:relative}span.multiselect-native-select select{border:0!important;clip:rect(0 0 0 0)!important;height:1px!important;margin:-1px -1px -1px -3px!important;overflow:hidden!important;padding:0!important;position:absolute!important;width:1px!important;left:50%;top:30px}.multiselect.dropdown-toggle:after{display:none}.multiselect-container{position:absolute;list-style-type:none;margin:0;padding:0}.multiselect-container .multiselect-reset .input-group{width:93%}.multiselect-container .multiselect-group.dropdown-item,.multiselect-container .multiselect-group.dropdown-toggle,.multiselect-container>.multiselect-option.dropdown-item,.multiselect-container>.multiselect-option.dropdown-toggle{cursor:pointer}.multiselect-container .multiselect-group>span,.multiselect-container>.multiselect-option>span{padding:3px 20px}.multiselect-container .multiselect-group>span>.form-check-label,.multiselect-container>.multiselect-option>span>.form-check-label{cursor:pointer}.form-inline .multiselect-container span.form-check{padding:3px 20px 3px 40px}
+span.multiselect-native-select{position:relative}span.multiselect-native-select select{border:0!important;clip:rect(0 0 0 0)!important;height:1px!important;margin:-1px -1px -1px -3px!important;overflow:hidden!important;padding:0!important;position:absolute!important;width:1px!important;left:50%;top:30px}.multiselect.dropdown-toggle:after{display:none}.multiselect{overflow:hidden;text-overflow:ellipsis}.multiselect-container{position:absolute;list-style-type:none;margin:0;padding:0}.multiselect-container .multiselect-reset .input-group{width:93%}.multiselect-container .multiselect-filter>.fa-search{z-index:1;padding-left:.75rem}.multiselect-container .multiselect-filter>input.multiselect-search{border:none;border-bottom:1px solid #d3d3d3;padding-left:2rem;margin-left:-1.625rem;border-bottom-right-radius:0;border-bottom-left-radius:0}.multiselect-container .multiselect-filter>input.multiselect-search:focus{border-bottom-right-radius:.25rem;border-bottom-left-radius:.25rem}.multiselect-container .multiselect-filter>.multiselect-moz-clear-filter{margin-left:-1.5rem;display:none}.multiselect-container .multiselect-option.multiselect-group-option-indented{padding-left:1.75rem}.multiselect-container .multiselect-all,.multiselect-container .multiselect-group,.multiselect-container .multiselect-option{padding:.25rem .25rem .25rem .75rem}.multiselect-container .multiselect-all.dropdown-item,.multiselect-container .multiselect-all.dropdown-toggle,.multiselect-container .multiselect-group.dropdown-item,.multiselect-container .multiselect-group.dropdown-toggle,.multiselect-container .multiselect-option.dropdown-item,.multiselect-container .multiselect-option.dropdown-toggle{cursor:pointer}.multiselect-container .multiselect-all .form-check-label,.multiselect-container .multiselect-group .form-check-label,.multiselect-container .multiselect-option .form-check-label{cursor:pointer}.multiselect-container .multiselect-all.active:not(.multiselect-active-item-fallback),.multiselect-container .multiselect-all:not(.multiselect-active-item-fallback):active,.multiselect-container .multiselect-group.active:not(.multiselect-active-item-fallback),.multiselect-container .multiselect-group:not(.multiselect-active-item-fallback):active,.multiselect-container .multiselect-option.active:not(.multiselect-active-item-fallback),.multiselect-container .multiselect-option:not(.multiselect-active-item-fallback):active{background-color:#d3d3d3;color:#000}.multiselect-container .multiselect-all .form-check,.multiselect-container .multiselect-group .form-check,.multiselect-container .multiselect-option .form-check{padding:0 5px 0 20px}.multiselect-container .multiselect-all:focus,.multiselect-container .multiselect-group:focus,.multiselect-container .multiselect-option:focus{outline:0}.form-inline .multiselect-container span.form-check{padding:3px 20px 3px 40px}.input-group.input-group-sm>.multiselect-native-select .multiselect{padding:.25rem .5rem;font-size:.875rem;line-height:1.5;padding-right:1.75rem;height:calc(1.5em + .5rem + 2px)}.input-group>.multiselect-native-select{flex:1 1 auto;width:1%}.input-group>.multiselect-native-select>div.btn-group{width:100%}.input-group>.multiselect-native-select:not(:first-child) .multiselect{border-top-left-radius:0;border-bottom-left-radius:0}.input-group>.multiselect-native-select:not(:last-child) .multiselect{border-top-right-radius:0;border-bottom-right-radius:0}