Merge pull request #23286 from yor-mozilla-com/bug1058285

Bug 1058285 - [PDF Viewer] Make PDF viewer a certified app
Bug 1058096 - Add show windows button to Rocketbar on Browser start page
Bug 1049730 - Add XML and HTML reports to Treeherder as artifacts. r=mdas
Merge pull request #23380 from Moz-TedC/bug-1057187-fix

Bug 1057187: Check all available mobile connections (SIM 1 & 2) for timezone information. r=kaze
Bug 1027995 - [User story] Transfer ringtones from SD card to ringtones folder; r=dkuo, ui-r=kcaldwell
Bug 1054995 - Refactor contacts action buttons into shared. r=francisco
Merge pull request #23376 from DouglasSherk/1054995-dialer-contacts-share

Bug 1054995 - Refactor contacts action buttons into shared. r=francisco
Bug 1060020 - font_size_utils.js: whitespace before/after header.textContent reduces size of text
Merge pull request #22597 from jimporter/ringtones-sd-card

Bug 1027995 - [User story] Transfer ringtones from SD card to ringtones folder
Bug 1046399 - [followup] Fix l10n IDs of new ringtones; r=mikeh
Merge pull request #23229 from DouglasSherk/1057619-l10n-node

Bug 1057619 - Rename Node in fb_tel_index to TrieNode, move its test into sharedtest. r=francisco
Bug 1060147 - Hide identification overlay with visibility: hidden.
Merge pull request #23426 from jimporter/ringtones-l10n

Bug 1046399 - [followup] Fix l10n IDs of new ringtones
Bug 1048639 - [VerticalHomescreen] Guard against empty entry points r=crdlc
Bug 927862 - Implement AttentionWindow
Merge pull request #21876 from crh0716/1032629

Bug 1032629 - APN Settings UX refresh r=eragonj, jaoo, gabriele
Bug 885110 - [email] Switch to email.js libraries. r=asuth r=jrburke r=mcav
Bug 1055713 - Entering a URL when in a browser window should navigate the current browser window. r=alive
Merge pull request #23427 from KevinGrandon/bug_1055713_navigate_current_browser_window

Bug 1055713 - Entering a URL when in a browser window should navigate the current browser window
Bug 1054215 - Alternate approach, window.open and <a target="_blank" > from a browser window should open a new browser window r=alive