Merge pull request #1 from cpoulain/master

Ensure table exists when model is created
Print on server startup again
Rename --desc to --description
Simplify run bundles: wipe out macros and don't symlink program and input in
Clean up ls output when there are no directories or files
Implement wait command
Wipe out location return value from info
Mask actual filesystem paths in usage errors
Make it possible to upload file bundles
Make it possible to upload file bundles by zip
Use safe_join for joining targets
Fix bug in worker.py
Allow make bundles with anonymous targets
Fix BundleStore tests
Allow for uuid prefix queries
Use UPLOADABLE_TYPES to set upload arguments
Base default upload name on upload path
Refactor metadata defaults code into lib
Simplify parsing expression
Add --auto argument