Fix cyclic import in "db drop"
Get rid of alembic_version on db drop
Merge https://github.com/vmalloc/weber-backend
Drop database in travis before checking deployment
Freeze alembic and flask-migrate versions to work around bug
Merge https://github.com/vmalloc/weber-backend
Merge https://github.com/vmalloc/weber-frontend

Conflicts:
	manage.py