Ignore ContactCapabilities' ordering in tests
Ignore ContactCapabilities' ordering in tests

It doesn't matter what order the list of contact capabilities is in:
they're effectively sets.

I would have used set(...) rather than sorted(...), but for Python
helpfully informing me that "dict objects are unhashable".

[Squashed together with a later commit from the same branch -smcv]

mlundblad/telepathy-gabble,Ziemin/telepathy-gabble,community-ssu/telepathy-gabble,community-ssu/telepathy-gabble,jku/telepathy-gabble,community-ssu/telepathy-gabble,community-ssu/telepathy-gabble,jku/telepathy-gabble,Ziemin/telepathy-gabble,mlundblad/telepathy-gabble,Ziemin/telepathy-gabble,Ziemin/telepathy-gabble,mlundblad/telepathy-gabble,jku/telepathy-gabble