ISnapshot interface
Uninstal plugin
Unbind context method for ITableModel and implementations.
Remove relations method.
Unbind and manual disposing in Window (see http://redmine.smar.fi/issues/306)
disableGarbageCollection in constructor.
Remove relations and models in closeEvent.
The controller finalizes the Entity Manager.
The context can clear the entity manager.
Merge branch 'hotfix/jni-memory-leak'