Description of problem:
When I rename/delete a process/drl/form/etc. then the old name is present in the recently opened/edited view. Trying to open such an item will throw a FileNotFoundException for the process designer (see attached screenshot) and display other error messages for other types.

Steps to Reproduce:
1. Open a process/drl/...
2. Rename the asset
3. Go to recently opened
4. Hit the open button.

Actual results:
Open is possible and an error will be shown

Expected results:
It should not be possible to open a non existent resource

Additional info:
It would be nice to have a note next to the asset (in the recently opened/edited) view if it's not present. E.g. 'Removed'