* Initial refactor of add_job_window
* Improved project naming and fixed Blender engine issue
* Improve time representation in main window
* Cleanup Blender job creation
* Send resolution / fps data in job submission
* More window improvements
* EngineManager renaming and refactoring
* FFMPEG path fixes for ffprobe
* More backend refactoring / improvements
* Performance improvements / API refactoring
* Show current job count in add window UI before submission
* Move some UI update code out of background thread
* Move some main window UI update code out of background thread
* Refactor add jobs and make add_job api only be one job (instead of a list)
* Renamed to JobImportHandler and misc cleanup
* Dont bury exceptions in server proxy post_job
* Update code to create child jobs in a cleaner manner
