Feature request: If the .conf file is read-only, disable the delete button

[thelovebug]

In the VM Manager screen, it would be really great to have the option to prevent the ability to delete the VM.

As there are no right-click options to be able to enable this (currently), perhaps the application could check to see if the .conf file for that machine is read-only and, if it is, disable the option to delete the machine.

This could be a feature that you could build upon in a future release to allow the interface to lock the machine by marking the .conf file read-only through a not-too-easy-to-get-to-by-mistake toggle.