IDE: rename identifier/find references: jump back in source editor

git-svn-id: http://svn.freepascal.org/svn/lazarus/trunk@46586 4005530d-fff6-0310-9dd1-cebe43e6787f
IDE: clean up

git-svn-id: http://svn.freepascal.org/svn/lazarus/trunk@46587 4005530d-fff6-0310-9dd1-cebe43e6787f