Bug 993265: preserve bookmark folder icons on the Bookmarks toolbar. r=mak
Bug 993195 - Add only one observer for messages with callbacks. r=wesj
Bug 993195 - Add EventCallback parameter to handleMessage. r=jchen
Bug 971630 - Australis: Far right/left selected overflow tabs look bad on session restore. r=mconley

--HG--
extra : rebase_source : b0179a2890f7b59a6b855ee0d1433874f20b1698
Bug 993421 - Only set the position:relative on the PanelUI-footer-inner when a subview is showing. r=Gijs

--HG--
extra : rebase_source : 53bfa07881dd1279073d7dc1378a34fc2fbbb503
Bug 993084 attempt - make CommonUtils and Metrics imports lazy, since they aren't going to be needed anywhere near startup or when experiments is disabled, r=gps
Merge m-c to fx-team.
Bug 990977 - Sponsored tiles: don't expose explanation URL as a localizable string [r=adw]
Hardcode the url into xul instead of dtd.
Bug 992327 - Change directoryLinks and NewTabUtils to imageURI instead of imageURISpec [r=adw]
Replace reference data and uses of s/Spec//.
Bug 993581 - use an empty directory tiles data source pref [r=adw]
Hardcode empty object for now.
Bug 903535 - Need to update text for user visible opt in UI for cell tower and wifi data collection and reporting. r=bnicholson
Bug 903535 - Tests. r=bnicholson
Bug 972684 - Don't use about:home in browser_findbar.js since it leads to intermittent failures and isn't necessary for the test. r=mikedeboer

--HG--
extra : rebase_source : 1a37a07c5f1fb349f878fdcb93d0187d3b80cf62
Bug 668903 - Pressing escape should close the saved passwords dialog. r=MattN

--HG--
extra : rebase_source : 9f23e3d3457c5409b00715038e3e8014a6a9b0c3
merge fx-team to mozilla-central