[MOD] moving preference filters to the left under the cog icon to spare some space for admin notification icon (to be added in a later release). Also adding a caret to the cog to make it more obvious that there are some settings available

git-svn-id: file:///var/local/code.tiki.org/tikisvn/trunk@51356 b456876b-0849-0410-b77d-98878d47e9d5