double managment model & UI
add test cases for normal module
add xml for double management to suite and form
convert input_trans to tag
add label, image and audio for case list form
disable for advanced module
Merge branch 'master' into double-management
better is_registration_form
better error messages

Conflicts:
	corehq/apps/app_manager/templates/app_manager/partials/build_errors.html
fix blocktrans
Merge branch 'master' into double-management

Conflicts:
	corehq/apps/app_manager/tests/test_suite.py
pep8 [ci skip]
Merge branch 'master' into double-management
better check for when to bind
Merge branch 'master' into double-management
final improvements, mostly UI
Merge branch 'master' into double-management

Conflicts:
	corehq/apps/app_manager/templates/app_manager/form_view_base.html
	corehq/apps/app_manager/templates/app_manager/module_view.html
	corehq/apps/app_manager/xform.py
put button object in buttonholder data
reset save button state after binding
Fix bug in app manager form properties