Batch for getting commits for users

Ready for review and merge
TODO
- https://github.com/podarok/ppdorg/issues/13 4 @M1r1k 
- https://github.com/podarok/ppdorg/issues/12 4 @podarok
- https://github.com/podarok/ppdorg/issues/11 4 @ygerasimov 

Done in this patch
![batch_result](https://cloud.githubusercontent.com/assets/563412/3196949/dfa01f38-ed3c-11e3-881b-df21f9bd151b.png)