XWiki-6882 : Improve user changing password.
Merge pull request #114 from tdelafosse/ChangingPassword

 XWiki-6882 : Improve user changing password.
XWIKI-8444: Add faceted search to the Solr Search UI
* Implement the faceted search UI.
XWIKI-8444: Add faceted search to the Solr Search UI
* No results on Main.Search because wiki defaults to null.
XWIKI-8444: Add faceted search to the Solr Search UI
* Use relative width.
XWIKI-8444: Add faceted search to the Solr Search UI
* Fix escaping test. Only use the provided wiki if it exists.
Merge branch 'master' into feature-solr-index-thread