* Expose renderer availability in status api
* Remove redundant is_available_for_job API call
* New server split logic by cpu and moved to server_helper.py
* Remove old dead code
* Add RenderStatus.WAITING to proxy categories
* Fix Blender image sequence -> video conversion and change video to use ProRes
* Wait for child jobs to complete
* Download and extract render files from subjobs
* Fix issue where zip was not removed
* Update client to use new method names in server proxy
* Fix minor download issue
* Add API to expose if RenderQueue is available to take new jobs for a given renderer and priority
* Fix issue with calculating Blender percent complete when not starting at 1
* Rename owner / client properties to parent / children
* Add make_ready method to API
* Create and submit subjobs to other servers
* Update make_ready to update children jobs and some misc fixes
* Misc GUI cleanup
* Accept start / end frames in job submissions. Start / end frame support for Blender
* Remove old render_all_frames variables and misc cleanup
* Client work - Client determines frame count for FFMPEG and shows frame picker UI