Fight club

This branch adds support for on screen messages and conversations that cannot be skipped. These were necessary to implement the primary purpose of this branch, which is the group attack scene. For now, this can be tested by going to room 411 to trigger the scene at any time. Once this is tested it will be a branch that is only available once the shooter has been activated.

I will add documentation for the onscreen messages and update the documentation for conversations to reflect these changes shortly.