Upgrade1Update5: Use coin for donation reputation

This PR use coin instead of coinday as input of reputation system, which calculates the donation power the donate action, which then will affect content bonus allocation.

In a nutshell, it will affect cases like:

1. you have 0 or very little balance in account.
2. you receive some points.
3. you donate them out right after 2.

previously, those donation will have low donation power, now it's >= than before.