Add board and stream list functionality

### Features
* New toolbar
* Boards can be listed
* Streams can be listed

### Compatibility Issues
* Existing database of random title-less boards needs a cleanup
* Switch to Angular routing means old URLs won't work
Actually seems like the problematic line in is jia/models.py line 63 https://github.com/Locu/kronos/blame/board-list/jia/jia/models.py#L63

@marcua Is there a reason for requiring the id to match in the json? Seems weird to require the model user to remember to set the id on the json blob before saving.