Bug 442943 - The adaptor codegenerator fails if no selectionDialog
and/or creationDialog is defined for all resources

Dialog code is now only generated if specified accordingly in the
adaptor model.

ToDos are now also inserted to indicate the minimal set of functions
that the developer needs to implement upon first generation. 

Change-Id: I1698e1ec65a977b7b5606a5e7f6f5bd35d60501f
Signed-off-by: jad <jad@kth.se>