Bug 1078261 - Don't fetch Loop call data for the FxA session if we aren't logged in. r=pkerr

--HG--
extra : rebase_source : e9dc9ddfa4c62254801889275c3fe46121036655
Bug 1071238 - UI Tour: add ability to put a widget in the toolbar. r=mattn
Bug 1075675 - use google-oauth-api.key for builds r=catlee
Bug 1077730 - Implement new tablet url bar navigation button colors (with temporary focused state). r=lucasr
Merge m-c to fx-team a=merge CLOSED TREE
merge fx-team to mozilla-central a=merge