[FIX] Make a new TikiFilter for wikicontent and deploy on tracker items text input. Will affect a few other areas such as wiki page saves but seems fine here so far...

git-svn-id: file:///var/local/code.tiki.org/tikisvn/branches/12.x@48308 b456876b-0849-0410-b77d-98878d47e9d5
[FIX] trackers: Handle process_save_plugins properly for multilingual fields - surprisingly tricky ;)

git-svn-id: file:///var/local/code.tiki.org/tikisvn/branches/12.x@48309 b456876b-0849-0410-b77d-98878d47e9d5