Adjust dialogues for auto removes

[Apmannen]

When choosing a reply, that reply should become available during that dialogue (but come back next time). Except for shop items?

When one left, auto say it (including first time enter shops, before discoveries).

Adjust bunny, rat, cashier dialogues.

[Apmannen]

https://github.com/Apmannen/DerbyGame/issues/85

[Apmannen]

• [x] cashier
• [ ] rat1
• [x] bunny