[Misc] Removed one deprecation usage
[Misc] Clear textarea content
XWIKI-9228: Add a language Query Filter to return languages in addition to document names
XWIKI-9229: Add a current language Query Filter to return only documents for the current language
XWIKI-8754: Not all the documents are sorted by "Date" on the "Document Index" and on the "Space Index" pages
XWIKI-9230: Prefix document names with the language in Livetables