IDE: less verbose JitList.

git-svn-id: http://svn.freepascal.org/svn/lazarus/trunk@42000 4005530d-fff6-0310-9dd1-cebe43e6787f
IDE: Hide CheckBox in grid for build modes for default mode, replace error message dialog with a label.

git-svn-id: http://svn.freepascal.org/svn/lazarus/trunk@42001 4005530d-fff6-0310-9dd1-cebe43e6787f
IDE: New EnvOption + CheckBox for showing/hiding build modes in project options.

git-svn-id: http://svn.freepascal.org/svn/lazarus/trunk@42002 4005530d-fff6-0310-9dd1-cebe43e6787f