Profile

Hi Zsolt,

Sending two features in a single pull request;
1 - We can now track the balances of each individuals, and also do a mass-recalculation.
2 - We can now track the contributions of each individuals, and also do a mass-recalculation.

The UI part is wonky, both on the maintenance page, and on the profile page, unfortunately I'm not that good with UX.