Merge pull request #22689 from KevinGrandon/bug_1051061_homescreen_dragdrop_error

Bug 1051061 - [VerticalHomescreen] TypeError: this.grid._grid.dragdrop is undefined
Merge pull request #22771 from jmcanterafonseca/fix_export_settings

Bug 1050843 - [B2G][Contacts] Export contacts buttons are overlaying Set...
Merge pull request #22807 from 6a68/bug-1038992-fixedup

Bug 1038992 - FxA "forgot password" link crashes refreshAuth flow. r=fer...