Add credit award date and weighting to feed

Issue information

From user: dunx

Contribution record

Fork management

Problem/Motivation

This new tool looks great.

At Zoocha we incentivise our devs to earn credits in their spare time. Knowing the date the credit was awarded is important for that process. You can't rely on the updated date of the issue as this can change after the credit has been awarded, sometimes months afterwards.

It would be nice to know how many credits were actually earned too, with core and other initiatives weighted.

Providing this information would further help assist the company to contribute more to Drupal.

Steps to reproduce

Here's my own personal feed for Zoocha.

http://new.drupal.org/contribution-records-by-organization-by-user?username=dunx&months=3&organization=Zoocha

There's no date or weighting in there, which would allow any automation of our internal credit tracking.

Proposed resolution

Remaining tasks

User interface changes

API changes

Data model changes