[FIX] edit form was underhanging the right hand column - so added some divs/existing classes so that layout was consistent with other similar edit forms plus removed the fixed size parameter for the 'Subject' input field - this best achieved with css to use 100% of available width

git-svn-id: file:///var/local/code.tiki.org/tikisvn/branches/13.x@52043 b456876b-0849-0410-b77d-98878d47e9d5