Move delivery_class out of app_worker (except for sequential_send).
Change dialogue state model views to update each model attribute individual when the respective element has changed
Dialogue states should be using .val() for getting textarea values, not .text()
Merge branch 'develop' into develop-frontend

Conflicts:
	go/apps/bulk_message/tests/test_new_views.py
	go/apps/bulk_message/tests/test_views.py
	go/apps/sequential_send/tests/test_views.py
	go/apps/subscription/tests/test_views.py
	go/apps/surveys/tests/test_new_views.py
	go/apps/surveys/tests/test_views.py
Merge branch 'develop-frontend' of github.com:praekelt/vumi-go into develop-frontend
Merge branch 'develop-frontend' into feature/issue-389-message-views
More sensible  modal confirmation message for dialogue reset action
Merge branch 'feature/issue-389-message-views' into develop-frontend
Merge branch 'develop-frontend' of github.com:praekelt/vumi-go into develop-frontend
Merge branch 'develop-frontend' into feature/issue-389-message-views