Moved file browsing in own module
Delete method for single job
Single job start method
Testing utility class
Single job stop method
Single job reset method
Changing prints into logging
Minor tweaks
Minor fix for test
Removed unused model
Cleanup

Removing unused controllers. They have all been refactored as modules.
Thanks @msimoncz!
Logging in main module
Headers cleanup
Fix for typo
Cleaning up worker info code

Communication used to happen between dashboard and server, which
violated the design. Now every request for info about a worker goes via
the server, so it can be more efficiently cached.