make formatting consistent for attendance and rebellions between members and divisions

Makes the display of rebellion and attendance figures the same on member and policy list objects.

Issue #713 also points out the attendance figure on member#show but I think issue #714 will have a big impact on that so better to wait for that.

## After:

member:
![screen shot 2014-10-13 at 1 34 12 pm](https://cloud.githubusercontent.com/assets/1239550/4608501/c312e01c-5281-11e4-8326-caf2b6fdeb60.png)

division:
![screen shot 2014-10-13 at 1 33 45 pm](https://cloud.githubusercontent.com/assets/1239550/4608504/cce0f098-5281-11e4-818c-5e27c49161f6.png)

## Before:

![screen shot 2014-10-13 at 1 34 01 pm](https://cloud.githubusercontent.com/assets/1239550/4608505/d095fd14-5281-11e4-888e-e5525cbea0e1.png)