* Fix issue with engine not being available to download
* Add version caches to ffmpeg downloader
* Remove some test parameters
* "releases" should be "release" in linux ffmpeg url
* CPU was incorrectly reported as OS
* Fix naming structure for FFMPEG downloads for linux
* More linux ffmpeg work
* Improved error handling
* WIP
* Consolidate platform reporting to not use platform directly
* Fix missing folder name
* Fix project output naming
* Undo config.yaml commit
* Add is_engine_available API call
* Fix issue where subjobs would not find servers
* 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