IDE: added new search function for designer components

git-svn-id: http://svn.freepascal.org/svn/lazarus/trunk@40014 4005530d-fff6-0310-9dd1-cebe43e6787f
IDE: code context: do not connect idle while destroying

git-svn-id: http://svn.freepascal.org/svn/lazarus/trunk@40015 4005530d-fff6-0310-9dd1-cebe43e6787f