Bug 1053708 - Make SMS main User Interface RTL-friendly

Interesting rule, I missed this in my group image patch and will need to take care about this in another way, since we don't have ```data-photo-url``` for default image case.

Also looks like ```[data-type="list"] li > label``` is misaligned in RTL, so that it's hard to check checkbox if you tap closer to the right edge, it's clearer if you check label with inspector - there is a "non-tapable" gap between input and the right edge.