IdeIntf: Cleanup

git-svn-id: http://svn.freepascal.org/svn/lazarus/trunk@42079 4005530d-fff6-0310-9dd1-cebe43e6787f
IDE: Show directory hierarchy by default in project inspector

git-svn-id: http://svn.freepascal.org/svn/lazarus/trunk@42080 4005530d-fff6-0310-9dd1-cebe43e6787f
IDE: removed workaround

git-svn-id: http://svn.freepascal.org/svn/lazarus/trunk@42081 4005530d-fff6-0310-9dd1-cebe43e6787f