Bug_993887 System Banner wont disapper issue

Bug_993887 Fix TestCase
Bug 1007568 - Follow symlinks when copying apps into STAGE_DIR, r=yurenju

Directories under GAIA_APPDIRS might contain symlinks
(e.g. outoftree_apps). When copying the symlinked apps
into STAGE_DIR without -L option, clear-stage-app
will remove the files in the target directory.
Bug 1016216 - Re-enable test_active_sync_* on-device tests
Bug 1012507 - Perma failing test, month view #months-day-view scroll
Bug 992226 - Awesomescreen leaks blob URLs for favicons
Revert "Bug 1007546 - Visual refresh for Add/Edit event view"

This reverts commit aec6ddd4df64567d7d7113146bebfcd0bc16f6db.
Merge pull request #19378 from zacc/bug_1016216

Bug 1016216 - Re-enable test_active_sync_* on-device tests
Bug 1013073 - Change sim-picker.html to use underscore in filename r=rik r=drs
Merge pull request #19411 from KevinGrandon/bug_1013073_sim_picker_naming

Bug 1013073 - Change sim-picker.html to use underscore in filename
Merge pull request #19396 from millermedeiros/1012508-scroll-perma-fail

Bug 1012507 - Perma failing test, month view #months-day-view scroll r=gaye
Merge pull request #19384 from lhadji/1007568/copy-symlink

Bug 1007568 - Follow symlinks when copying apps into STAGE_DIR, r=yurenj...
Merge pull request #18937 from AshayNeema/Bug_993887_System_Banner_wont_disapper_issue

Bug_993887 System Banner wont disapper issue
Merge pull request #19399 from EricRahm/bug_992226

Bug 992226 - Awesomescreen leaks blob URLs for favicons r=benfrancis
Bug 1013085 - change gaia-header folder name r=yor r=wilsonpage
Merge pull request #19412 from KevinGrandon/bug_1013085_gaia_header_naming

Bug 1013085 - change gaia-header folder name
Bug 1010490 - [Camera][Flame] Zoom bar overlaps recording timer
Merge pull request #19280 from wilsonpage/1010490

Bug 1010490 - [Camera][Flame] Zoom bar overlaps recording timer
Bug 1010537 - Move css overrides from locales file to CSS. r=benfrancis
Bug 895438 - making status bar icons accessible to a screen reader. r=alive