IDE: messages: moved toggles to a subsection

git-svn-id: http://svn.freepascal.org/svn/lazarus/trunk@45350 4005530d-fff6-0310-9dd1-cebe43e6787f
IDE: messages: smaller gradient

git-svn-id: http://svn.freepascal.org/svn/lazarus/trunk@45351 4005530d-fff6-0310-9dd1-cebe43e6787f