On the engine humhub (Yii2) implement a bonus system for users.

For a site working on the engine, humhub, social networking, you must implement the accrual of bonuses to users.

humhub works in Yii2, in order to understand it enough to know framework at the secondary level, and be able to use xdebug
The project is alive, active, looking for a person who will regularly perform tasks on it. You must have at least 4 hours a day free. The work is almost every day.

The first task for the trial. Set a budget, me from the lantern.

Task
1) Add a field reflecting the state of the bonus account in the user table.
2) Create a table reflecting the history of the bonus account
3) UPS will charge for comments. One comment – one bonus
4) Implement the method to recalculate the balance of the bonus the user should consider based on history
5) Call the method reload bonus after you create a new commentary on the recording
6) When removing a comment, be deleted from the calculation, and recalculates.

In responding please include the following
1) Cost for the task
2) Deadline
3) Your contacts, if they are not in the profile.