[FIX] Text field validation in trackers was only done client side

git-svn-id: file:///var/local/code.tiki.org/tikisvn/branches/13.x@52253 b456876b-0849-0410-b77d-98878d47e9d5
[MRG] Automatic merge, branches/13.x 52251 to 52253

git-svn-id: file:///var/local/code.tiki.org/tikisvn/trunk@52255 b456876b-0849-0410-b77d-98878d47e9d5