* Testing tendermint docker compose for travis
* Typo tendermint*
* Re-do migrate cli changes
* don't skip event stream test
* Fix flake8 and unskip a test skipped during dev
* Revert styling changes made from editor
* skip a failing test case which was already disabled
* Remove reference to 'keypair' in commands
- Remove commands that were not required.
- export-my-pubkey
- set-shards
- set-replicas
- add-replicas
- remove-replicas
- Update bigchaindb --help, usage description
- Re-enable tests
- Update docker-compose.travis.yml and Dockerfile for travis
because some env variables are not needed
* Remove unnecessary import of rethinkdb in a test
* Move test_run_query_util as a rethinkdb-specific test
* Move rethinkdb-specific command tests to own file
* Add __init__.py to new test folders
* Move command tests to their own test module
* Move fixtures out of command tests into separate conftest for commands
* Fix some small flake8 issues with rethinkdb's test_run_query_util
* Add pytest ignore hook to filter out test dirs that are not for the requested backend
* Move backend-specific tests in tests/db/ to tests/backend/
