Install definitions to common app data.
Grant full access to dynamo.addin

Users running the installers should be able to create addins that have
access so that they can be deleted and recreated in the future.
Fix class name for 0.6.3 external application.
Run addin generator after uninstall.

Flag the addin generator and revitaddinutility to not be deleted during
uninstall. Run the addin generator when the uninstall completes to reset
the addins base on remaining Dynamo installs.
New addingenerator.