IA Pages - display issues

@russellholt @jdorweiler @jbarrett 

Stash id, title, tags and body of each issue for a given IA in ia/view/.../json.
On the page they are rendered as links to the github issues. Maybe we could also display the tags, if not the body (aka the description).
Or maybe also a limited amount of characters from the body.

Anyway, screenshot:
![screen shot 2014-11-02 at 13 38 28](https://cloud.githubusercontent.com/assets/3652195/5069855/43fa47d4-6e60-11e4-981d-e7cbf4d28503.png)

is issue_id new?