Some new features and fixes

[ruscon]

I don't know python, but it's working, u can check :)

[druban]

There's a bug in the hidden reward code. When it picks up a hidden reward, it doesn't clear it, meaning that in the next account refresh cycle it'll attempt to collect it again resulting in "internal error" message.

[druban]

At the end of collect() method, before return, add:
# Clean up. Otherwise entry will be picked up on the next reload resulting in server error
self.session.query(HiddenReward).filter_by(hiddenRewardId=self.hiddenRewardId).delete()