tests(accounts): functional about:accounts tests
Merge pull request #1576 from vladikoff/aboutTests

tests(accounts): functional about:accounts tests
chore(build): change bower install to bower update
Release v0.20.0
Merge pull request #1597 from pdehaan/issue-1596

chore(build): change bower install to bower update
fix(avatars): allow mobile browsers to reposition the image during crop
Merge pull request #1605 from mozilla/issue-1598-drag-on-mobile

fix(avatars): allow mobile browsers to reposition the image during crop. r=vladikoff
feat(signin): Add cached signin