版本：
文件：
- https://cdn.bootcdn.net/ajax/libs/ng-tags-input/3.2.0/ng-tags-input.bootstrap.css
- https://cdn.bootcdn.net/ajax/libs/ng-tags-input/3.2.0/ng-tags-input.bootstrap.min.css
- https://cdn.bootcdn.net/ajax/libs/ng-tags-input/3.2.0/ng-tags-input.css
- https://cdn.bootcdn.net/ajax/libs/ng-tags-input/3.2.0/ng-tags-input.js
- https://cdn.bootcdn.net/ajax/libs/ng-tags-input/3.2.0/ng-tags-input.min.css
- https://cdn.bootcdn.net/ajax/libs/ng-tags-input/3.2.0/ng-tags-input.min.js