Move contents of output/ to support/.
Add Focus class to store interfaces by name and the current interface in focus.

This is not integrated yet.

Also, add #reset to Events to remove all registered events. (Used for testing really.)
Remove pointless logger tests.
Fix up Focus tests to handle events.
Add #unevent method to Events;

This allows the deletion of an event by name, effectively deleting all associated actions.
Fix bug in event triggering.