only care about unclassifieds in gate queue

we really don't care about check failures for classification,
because those might just be terrible code, which we get a lot of.
So only report unclassified tests to the user on gate failures.

Now with extra tests for this behavior!

Change-Id: I52044afb4f3a1bf3f22ba4c0e8d38d76271ffc00
fix formatting on 'and'

otherwise we break urls in IRC

Change-Id: I22cb949c4c022be65b2c0fdafc6f29ef5d4fbe16
Merge "only care about unclassifieds in gate queue"
Merge "fix formatting on 'and'"