IDE: less hints, initialize vars, use unused parameters

git-svn-id: http://svn.freepascal.org/svn/lazarus/trunk@44457 4005530d-fff6-0310-9dd1-cebe43e6787f
IDE: options: component palette: fixed crash

git-svn-id: http://svn.freepascal.org/svn/lazarus/trunk@44458 4005530d-fff6-0310-9dd1-cebe43e6787f