lcl: publish TListView.OnInsert

git-svn-id: http://svn.freepascal.org/svn/lazarus/trunk@43228 4005530d-fff6-0310-9dd1-cebe43e6787f
ide: add delete all button in resource options

git-svn-id: http://svn.freepascal.org/svn/lazarus/trunk@43229 4005530d-fff6-0310-9dd1-cebe43e6787f