Add a message for when bugzilla reports are limited by view and send back to channel

[AutomatedTester]

Bug 653625 is an example

[whimboo]

The answer from Firebot is:
Bug https://bugzilla.mozilla.org/show_bug.cgi?id=653625 is not accessible

[AutomatedTester]

the way that I am accessing bugzilla I get the same response if the bug is not accessible or if it doesnt exist. I am going to have to check that I am using the right end point or if this is a bug in Bugzilla

[whimboo]

I wouldn't be too worried about that then. Just reply the message and it should be fine. Firebot even doesn't reply anything for a bug which doesn't exist.