Merge pull request #18384 from 6a68/revert-bug-987418

Revert "Bug 987418 - Update copy in fxa system app r=ferjm"
Bug 995425 - Upgrade Sinon to 1.9.1 and update tests to match the API change. r=rexboy
Bug 992393 - [camera][madai] preview mode UI updates
Bug 995630 - Remove Gaia code that supported the old mozTelephony.dial/dialEmergency API

- Removed requireApp usage
- Moved the telephony.dial/dialEmergency stubbing to the main suite
- Some modifications for jshint compat
Merge pull request #18381 from justindarc/bug992393

Bug 992393 - [camera][madai] preview mode UI updates
Bug 992876 - Reply icon repeated.
Merge pull request #18302 from zbraniecki/995425-upgrade-sinon

Bug 995425 - Upgrade Sinon to 1.9.1 and update tests to match the API change
Merge pull request #18349 from KevinGrandon/bug_995406_home2_install_uninstall_apps

Bug 995406 - [Home2] Support installing/uninstalling of applications
Bug 985454 - [Home2] App Grid Zooming and Reflow r=me a=gwagner
Merge pull request #18396 from KevinGrandon/bug_985454_home2_app_grid_zooming

Bug 985454 - [Home2] App Grid Zooming and Reflow
Bug 996924 - [Home2] Bookmark datastore sync r=me
Merge pull request #18352 from timdream/push

Bug 896145 - Split install-gaia into profile and push step, r=yurenju
Bug 995960 - Hide l10n missing keys during make without LOCALE_BASEDIR set. r=stas
Revert "Merge pull request #18302 from zbraniecki/995425-upgrade-sinon"

This reverts commit 9869eaa311e54248140731955496d44d1f578943, reversing
changes made to 7591e9dc782ac2e97d63a96f9deb71c7b3588328.
Bug 996264 - [B2G][Gaia]Selecting 'more info' in the geolocation prompt does not expand more information
[Kevin Hu] Fix bug 996549

To limit the max length for SSID field to 32 characters.
Merge pull request #18397 from KevinGrandon/bug_996924_home2_bookmarks

Bug 996924 - [Home2] Bookmark datastore sync r=me
Revert "[Kevin Hu] Fix bug 996549"

This reverts commit 917f925b647b39b1e3a78e2e8b259e28f1af085a.
Bug 973436 - Refactor the battery panel using AMD modules
Merge pull request #18319 from crh0716/973436_v2

Bug 973436 - Refactor the battery panel using AMD modules r=evelyn