Fix Bug 1484227 - set improvesearch.noDefaultSearchTile to true

Fix Bug 1483692 - Fix giant scrollbars on RTL add search shortcut menu (

#4350)

chore(l10n): Update from l10n-central Tue Jul 31 2018 10:22:21 GMT-07…

…00 (PDT)

Fix Bug 1471514 - Add top-of-funnel metrics for fxa.

Fix Bug 1474244 - Prevent ASRouter uninit from being called for unrel…

…ated pref changes

Fix Bug 1472209 - Remove StartupOverlay if the tour is skipped

fix(topsites): Listen for PLACES_LINK_DELETED actions to refresh (#4201)

Fix Bug 1469823 - A new Top Sites tile does not appear after deleting a tile

fix(storage): Catch IndexedDB permafail (#4222)

Bug 1471375 - Reports about missing activity stream content on new tab page and about:preferences#home panel

fix(storage): Catch IndexedDB permafail (#4222)

Bug 1471375 - Reports about missing activity stream content on new tab page and about:preferences#home panel

chore(mc): Port Bug 1447879 - Cannot customize about:preferences#home…

… content when sync or preference searching is disabled. r=k88hudson