Abuse filters for game creation

[zond]

Created games should have the following fields:

• [ ] Pay wall - a minimum donation limit for players able to join. Max value is the donation level of the logged in user.
• [ ] NMR insurance - a cost to the donation level for each phase where a player NMRs.
• [x] Max hated level - a maximum number of blacklist entries/played games targeting a player able to join. Max value is the number of blacklist entries/played games targeting the logged in user.
• [x] Max hater level - a maximum number of blacklist entries/played games created by players able to join. Max value is the blacklist entries/played games for the logged in user.

[zond]

Added parts in https://github.com/zond/diplicity/commit/fbb949e019b9f14df0d286888487df8fc8b62abd