IDE: project options: select active mode in diff dialog

git-svn-id: http://svn.freepascal.org/svn/lazarus/trunk@41493 4005530d-fff6-0310-9dd1-cebe43e6787f
IDE: mode matrix: no special color for IDE options

git-svn-id: http://svn.freepascal.org/svn/lazarus/trunk@41494 4005530d-fff6-0310-9dd1-cebe43e6787f