* Remove legacy client
* Misc cleanup
* Add message box after submission success / fail
* Use a new is_localhost method to handle localhost not including '.local'
* Code cleanup
* Fix issue where engine browser would think we're downloading forever
* Add message box after submission success / fail
* Use a new is_localhost method to handle localhost not including '.local'
* Code cleanup
* Fix issue where engine browser would think we're downloading forever
* Add pubsub messages to serverproxy_manager.py
* Add resolution, fps and renderer versions to add_job.py
* Add cameras to add_job.py
* Add message box after submission success / fail
* Use a new is_localhost method to handle localhost not including '.local'
* Code cleanup
* Fix issue where engine browser would think we're downloading forever
* Add message box after submission success / fail
* Code cleanup
* Add cameras to add_job.py
* Add dynamic engine options and output format
* Move UI work out of BG threads and add engine presubmission tasks
* Submit dynamic args when creating a new job
* Hide groups and show messagebox after submission
* Choose file when pressing New Job in main window now
* Make downloaders subclass of base_downloader.py
* Link engines and downloaders together for all engines
* Replace / merge worker_factory.py with engine_manager.py
