Start: Remove QML include
Start: Eliminate errors on unreadable images
Start: Ensure command succeeded
Start: Correct startup WB
Also re-enable the migrator, which was not the culprit.
Gui: Roll back unneeded NoneWorkbench changes
Start: Automatically run command when event loop starts
Also sets PartDesign as the default startup Workbench.
Start: Add checkbox for starting or not starting Start
Start: Correct default card size parameter access
Start: General cleanup
