Merge pull request #18084 from azasypkin/bug-946497-stretched-thumbnails

Bug 946497 - [B2G][SMS][MMS] Thumbnail previews for cropped images in MMS message appear stretched causing not all of the image to be visible.
Merge pull request #18320 from viorelaioia/bug_995992

Bug 995992 - New screen has been added to the FTU ui
Bug 978130 - [FDN] Misleading SMS message

If the SMS call center is not in the FDN list, no SMS can be sent
 - no matter if the recipients are in the FDN list or not.
Here is a less misleading error message.
Merge pull request #18329 from bebef1987/xfail

Bug 996559 - Xfail Test test_calendar_flick_through_months and test_fmra...
Bug 980448 - modify-account section missing closing tag
Merge pull request #18168 from julienw/994622-ignore-network-errors

Bug 994622 - [Build] Ignore network error when trying to fetch the node_...
Merge pull request #18124 from arcturus/fdnMessage-bug978130

Bug 978130 - [FDN] Misleading SMS message
Bug 996662 - Disable intermittent failing test, Places tests Search for a string that doesnt match visited url
Merge pull request #18297 from kumarrishav/issue-980395

Bug 980395 - Remove navigator.mozMobileConnection uses from the FTU app r=fcampo
Bug 996683 - Disable intermittent failing test, Find My Device lock > Lock the screen through the test app
Bug 996662 - Disable intermittent failing rocketbar tests
Bug 992884 - Implement browser start page. r=benfrancis
Merge pull request #18333 from millermedeiros/980448-modify-account-closing-tag

Bug 980448 - modify-account section missing closing tag r=gaye
Bug 996683 - Poll for the lockscreen message to show up.
[Clock] Alarm volume control must change immediately when slider is moved.
Merge pull request #18204 from daleharvey/992884

Bug 992884 - Implement browser start page. r=benfrancis
Bug 994702 - making an incorrectly visible callscreen 'hold' text an aria label. r=Rik
Bug 918400 - [Clock] Vibrate should use a toggle instead of a drop down.
Bug 984486 - FxA System app should support both 'accountId' and 'email' fields r=ferjm
Bug 994710 - [Settings] Remove icons from Keyboard installed input methods. r=arthurcc