Remove unnecessary VumiApi methods.
Merge branch 'develop' into feature/issue-581-conv-and-router-batches-at-creation
Create batch for new conversation, update it for old-style start.
Merge branch 'develop' into feature/issue-581-conv-and-router-batches-at-creation
Add tags to batches when acquiring.
Test tag batches.
Batch for router.
Explanatory comment.
Rename some tests.
Simplify unnecessary tests.
Merge branch 'feature/issue-581-conv-and-router-batches-at-creation' into develop
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/tests/base.py
	go/conversation/tests.py
Merge branch 'develop-frontend' of github.com:praekelt/vumi-go into develop-frontend