Merge pull request #275 from dokuwiki-translate/lang_update_50

Translation update (it)
translation update
Merge pull request #276 from dokuwiki-translate/lang_update_54

Translation update (zh)
changed style of `<file>` slightly to help tell it apart from `<code>`

For Ingo from the LinuxHotel
translation update
Merge pull request #278 from dokuwiki-translate/lang_update_89

Translation update (it)
Revert "add html5 attributes to email fields of the config manager"

This reverts commit 0d21c87f31bb8931973f720c04346bf5f8612470.
translation update
translation update
added gravatar images
some initial go at the search tab
fixed some confusion between base, id and name
Merge pull request #281 from dokuwiki-translate/lang_update_100

Translation update (uk)
Merge pull request #280 from dokuwiki-translate/lang_update_99

Translation update (fr)
added a first unit test
added 4th tab for manual install
moved CSS to LESS file, removed angua compatibility
added a very simplistic lightbox
added tests for the find_folders method
installation now works