fpvectorial: Adds some more conveniece styles

git-svn-id: http://svn.freepascal.org/svn/lazarus/trunk@43108 4005530d-fff6-0310-9dd1-cebe43e6787f
ValEdit: Fix crash in InsertRow if Strings.Count = 0.
Issue #0025144.


git-svn-id: http://svn.freepascal.org/svn/lazarus/trunk@43109 4005530d-fff6-0310-9dd1-cebe43e6787f