IDE: project options: added build mode in session checkbox

git-svn-id: http://svn.freepascal.org/svn/lazarus/trunk@41490 4005530d-fff6-0310-9dd1-cebe43e6787f
IDE: project options: hide editing all build modes - not implemented yet

git-svn-id: http://svn.freepascal.org/svn/lazarus/trunk@41491 4005530d-fff6-0310-9dd1-cebe43e6787f