Start work on component demo
Clean up the switch component a bit
Improve the switch demo
Add dark styling to the Switch component
Fix issues with changing theme colors for an app
Add icon and progress bar demos
Fix #51

This allows non-Item objects to be added to ApplicationWindow
Add in missing icons to the FontAwesome icon list
Fix issue with toolbar
Fix bug with dark background in Switch
Fix an issue with AppTheme
Merge pull request #52 from quantum-os/feature/component_demo

Initial work on a component demo