[Active Shooter] Move Prof Bell upstairs

[Feature #3043](https://projects.cecs.pdx.edu/issues/3043)

Moved Prof Bell upstairs to move the player into the second floor and make escaping more difficult.
Also modified the Prof Bell conversation and the objectives it triggers. Now the conversation is much shorter and modals announce the new objectives starting.

We still need to add things to the escape route to actually divert them from just going to the doors.
Also, they can currently reach the doors without being able to open them...