Bug 1006129 - Overfill scroll ratio test for settings.

Based on work from :mchang.
Bug 945631 - Listen to event discoverystatechanged
Bug 1007546 - Visual refresh for Add/Edit event view
Bug 1015059 - Only run gaia_ui_tests after_script on travis ci
Bug 936581 - [B2G] Keyboard language display change not visibly apparent
to user.
 - Show a language-specific label (shortLabel) on the IME switching key.
Bug 1013155 - (Part I) Remove #keyboard[data-hidden]
Bug 1013155 - (Part II) InputMethodManager and tests
Bug 1013155 - (Part III) Use InputMethodManager to load IMEngine and unblock rendering
Bug 1013155 - (Part IV) Wait for mozL10n to be ready
Bug 1013155 - (Part V) Longer timeout for bug 1007595
Bug 1013155 - (Part VI) More log in render.js
Bug 1013155 - (Part VII) Wait for layout
Bug 1013155 - (Part VIII) Remove useless cachedIMEDimensions
Bug 1013155 - (Part IX) Avoid flickering when switching between inputs
Bug 1013155 - (Part X) Fix a race on keyboard launches

When keyboard loads faster than inputcontext but the layout is loaded after that
(Happened on Peak with OPTIMIZE)
Bug 1013155 - (Part XI) Fix integration test errors
Revert "Bug 987487 - [Gaia] [Build] Refactoring webapp-optimize.js and unit tests"
This broke a lot of apps.

This reverts commit 3cc2733bc0e5ec952a4c1edfc115b814b49edb95.
Merge pull request #19585 from lightsofapollo/bin-ci-no-after

Bug 1015059 - Only run gaia_ui_tests after_script on travis ci
Bug 1010088 - Use STAGE_DIR consistently on build process
Merge pull request #19487 from hfiguiere/bug1006129

Bug 1006129 - Overfill scroll ratio test for settings. r=hub,eperelman