Codalab

Two fixes for slow transition issue:
1. Use deep copy instead of a shallow copy in getting available workers for a particular user. (1571)
2. Use disk_used when checking for disk quota left for each user. (1589)

Other changes include:
1. Check for bundle existence before deduction resources (1588)
2. Add a mechanism to configure worker-manager specific values (1569)
3. Install AWS Elastic Container Registry Login helper on Worker image (1567)
4. Test restarting worker in Travis tests (1544)
5. Support unicode in current frontend (1568)
6. Respect minimum number of workers on worker manager (1557)
7. Add database migration for the shared filesystem workers (1556)
8. Enable shared filesystem workers again (1534)

1. Populate owner column with real value: 1487
2. Merge two bundle manager files and simplify run message: 1501
3. Pull newly updated docker image when cl run: 1472
4. Represent state in worker using objects and named tuples instead of a dictionary: 1505
5. Add support for testing shared filesystem workers on Travis: 1536

Fix
-Update MANIFEST.in 1499

Fixes
-Re-add install_requires to setup.py (1477 )

Other
-Worker manager (1408)

Fixes
- Fix size parameters for display image (1441)
- Set empty worksheet title name to "untitled" (1443)
- Upgrade database revision to the latest before any other operations during deployment (1429)
- Better dealing with nonexistent containers and container removal (1159)
- Add search field (host_worksheet) to cl help (1446)
- Add logic to prevent pushing images to dockerhub when user credential is not defined (1439)
- Update shebang line on codalab_service.py for cross-platform portability (1471)

Cleanup
- Name bundle containers by the UUIDs (1437)
- Change name of general worker docker network (1438)
- Create cl-server and cl-bundle-manager entry_points (1445)
- Refactor bundle model (1453)
- Remove the unused worker/update_bundle_metadata API endpoint and methods (1468)
- Add macOS instructions (1451)

Features
- Use `cl-competitiond` instead of `scripts/competitiond.py` (1415)

Fixes
- Solve permission denied issue in writing alembic version files to container (1405)
- Handle cookies from 0.3.x -> 0.4.x gracefully (1433)
- Fix error when displaying image in worksheets (1432)
- Specify dependencies so that docker services are stopped/deleted in the right order (1416)
- Re-add travis-deploy.sh so that new versions are published to pypi (1435)