Bug 967272 - Introducing contact photo thumbnails for new contacts,
and using thumbnails wherever it makes sense.
r=arcturus, jmcf(facebook), julienw(sms), rik(dialer)
Bug 968769 - Remove data_layer from base.py's init
Merge pull request #15990 from etiennesegonzac/contact-thumbnails

Bug 967272 - Introducing contact photo thumbnails for new contacts,
and using thumbnails wherever it makes sense.
r=arcturus, jmcf(facebook), julienw(sms), rik(dialer)
Merge pull request #16037 from bebef1987/data_layer

Bug 968769 - Remove data_layer and accessibility from base.py's init