Updated the game and Sarah

[Deklaration]

I've fixed some bugs - thanks for reporting!
I also noticed that Sarah Borokova wasn't doing her job as well as I had hoped. I've added more keywords and more hints for her to give. She is now three times more likely to give you a proper response.
There might still be some bugs with her sending out double emails. I'm gonna let her run for a while and write down all the bugs I can find.