Bug 897352 - [gaia build system] Transition to a build_stage for assembling apps

Conflicts:
	Makefile
	apps/communications/build/build.js
	build/copy-build-stage-manifest.js
	build/test/integration/distribution.test.js
	build/utils-xpc.js
	build/utils.js
	build/webapp-manifests.js
Bug 963556: Update NFC Manager, Handover to use new shared nfc_utils.js.

Conflicts:
	apps/system/js/nfc_handover_manager.js
	apps/system/js/nfc_manager_utils.js
Bug 961800 - Implement Child Window Factory

Conflicts:
	apps/system/js/app_transition_controller.js
	apps/system/js/app_window.js
	apps/system/js/app_window_manager.js
	apps/system/js/cards_view.js
	apps/system/style/window.css
Merge pull request #17363 from yurenju/stage2

Bug 897352 - [gaia build system] Transition to a build_stage for assembl... r=@ochameau
Merge pull request #17369 from yurenju/nfc

Bug 963556: Update NFC Manager, Handover to use new shared nfc_utils.js. r=@alivedise
Merge pull request #17370 from alivedise/bugzilla/961800_master_merging/child-window-factory

Bug 961800 - Implement Child Window Factory, r=etienne
Bug 981401 - [Messages] Notification does not vanish when the SMS is read when going back from sleep
Revert "Bug 897352 - [gaia build system] Transition to a build_stage for assembling apps" for Breaking Windows Builds

This reverts commit 91c8fd2a33c9be6a745a3f30a6e5113831655502.
Merge pull request #17330 from steveck-chung/bug-981401

Bug 981401 - [Messages] Notification does not vanish when the SMS is read when going back from sleep. r=arcturus
Bug 984251 - ./bin/gaia-test and Travis-CI unit tests should be working with test_apps
Revert "Bug 961800 - Implement Child Window Factory" for Gaia UI Test Bustage

This reverts commit 0cd5228663d8563831f0156e85ae8225d2004a3c.
Bug 981882 - Update input field design
Bug 985927 - Button locator changed for test_window_open_inside_iframe.TestWindowOpenInsideIframe
Merge pull request #17385 from AndreiH/bug_985927

Bug 985927 - Button locator changed for test_window_open_inside_iframe.T...
Merge pull request #17361 from RickyChien/bug-984251

Bug 984251 - ./bin/gaia-test and Travis-CI unit tests should be working with test_apps r=@yurenju
Bug 983054 - [DSDS][Dialer] Only fill active number instead of calling from suggestions bar on dual SIM devices. r=rik
Merge pull request #17287 from DouglasSherk/983054-dsds-suggestions

Bug 983054 - [DSDS][Dialer] Only fill active number instead of calling from suggestions bar on dual SIM devices. r=rik
Bug 962659 - [B2G][Contacts] Adjust Remove and Cancel button's position and style in contact deletion confirm for better use experience.
Merge pull request #17326 from azasypkin/sms

Bug 962659 - [B2G][Contacts] Adjust Remove and Cancel button's position and style in contact deletion confirm for better use experience. r=schung.
Merge pull request #17190 from rnowm/981882

Bug 981882 - Update input field design