Usability: display all resource conflicts simultaneously and provide links

A couple of related problems with the display of resource conflicts when creating or editing reservation nodes:

A) All of the conflicts should be reported simultaneously. I created a pair of reservations with 3 overlapping resources. When I went to submit the 2nd one, it only complained about 1 conflict. I removed that conflict, and it complained about the next one. This will definitely be a pain to use. It'd be much better if the initial error message just included all 3 conflicts.

B) It'd be nice if the reservation and resource names in the conflict error message were links to the corresponding nodes. If I'm told:

It'd be nice to be able to just open "Recording session with Matt" in another tab and see how long that's going to go, to decide if I'm going to pick a different time.

C) Since we know all reservations have date information, we could just include that directly in the message, reducing the need to click on the conflicting reservation nodes at all. For example:

This should all be pretty easy, I just don't have time to generate a patch right now since I'm out the door. Wanted to get an issue started while it's still fresh on my mind. ;)

Thanks,
-Derek