IDE: add hints to OI options.

git-svn-id: http://svn.freepascal.org/svn/lazarus/trunk@46733 4005530d-fff6-0310-9dd1-cebe43e6787f
IDE: Move the option for single-click / double-click from messages options to desktop options page. Improve layout, add hints. Issue #18269.

git-svn-id: http://svn.freepascal.org/svn/lazarus/trunk@46734 4005530d-fff6-0310-9dd1-cebe43e6787f
IDE: Replace Bevels + Label with DividerBevel in desktop options. Reorder the layout.

git-svn-id: http://svn.freepascal.org/svn/lazarus/trunk@46735 4005530d-fff6-0310-9dd1-cebe43e6787f