Added FlyoutsControl.

Added Caliburn.Micro demo.
Closes #387.
Removed unneeded resource dictionaries.
Added IsItemItsOwnContainerOverride override to FlyoutsControl.
Moved Caliburn.Metro.Demo into samples folder.

Added Caliburn.Metro.Demo.NET45 project.
Added more CM+MAM glue.
Tidying up samples
die #regions, die