Restructured logic on how we look for slice engines and implemented work in settingscontrolselector
implementing part of export as x3g
Remove missing file.
Merge branch 'development' into greg-development

Conflicts:
	MatterControl.csproj
	StaticData/Translations/Master.txt
Merge branch 'development' into greg-development
Disable x3g export (for now)
Slice engine info refactoring.
Merge branch 'development' of https://github.com/MatterHackers/MatterControl into development

Conflicts:
	SlicerConfiguration/SlicingQueue.cs