[FIX]Improve r52153: Keep button class as non-default only the Save (btn-primary) and Exit (btn-warning).

git-svn-id: file:///var/local/code.tiki.org/tikisvn/branches/13.x@52173 b456876b-0849-0410-b77d-98878d47e9d5
[FIX]Improve r52154: Keep button class as non-default only for Post (btn-primary) in view forum.

git-svn-id: file:///var/local/code.tiki.org/tikisvn/branches/13.x@52174 b456876b-0849-0410-b77d-98878d47e9d5
[REVERT]Revert r52155 as button class changes (in trackers) were to navigational buttons only

git-svn-id: file:///var/local/code.tiki.org/tikisvn/branches/13.x@52175 b456876b-0849-0410-b77d-98878d47e9d5
[FIX]Improve r52158: Keep button class as non-default only for Duplicate and Save (btn-primary) in file galleries.

git-svn-id: file:///var/local/code.tiki.org/tikisvn/branches/13.x@52176 b456876b-0849-0410-b77d-98878d47e9d5