Fix issue #1664 and update bower plugins

bower_components/bootstrap-datepicker/.bower.json

bower_components/bootstrap-datepicker/CHANGELOG.md

bower_components/bootstrap-datepicker/README.md

...ts/bootstrap-datepicker/dist/css/bootstrap-datepicker.css

...ootstrap-datepicker/dist/css/bootstrap-datepicker.min.css

...p-datepicker/dist/css/bootstrap-datepicker.standalone.css

...tepicker/dist/css/bootstrap-datepicker.standalone.min.css

...s/bootstrap-datepicker/dist/css/bootstrap-datepicker3.css

...otstrap-datepicker/dist/css/bootstrap-datepicker3.min.css

...-datepicker/dist/css/bootstrap-datepicker3.standalone.css

...epicker/dist/css/bootstrap-datepicker3.standalone.min.css

...ents/bootstrap-datepicker/dist/js/bootstrap-datepicker.js

.../bootstrap-datepicker/dist/js/bootstrap-datepicker.min.js

...omponents/bootstrap-datepicker/js/bootstrap-datepicker.js

bower_components/bootstrap-datepicker/package.json

bower_components/ckeditor/.bower.json

bower_components/ckeditor/CHANGES.md

bower_components/ckeditor/ckeditor.js

bower_components/ckeditor/lang/ru.js

bower_components/ckeditor/lang/zh-cn.js