Adds username validation to the Developer model
Merge pull request #4 from kyledecot/developer-username-validation

Adds username validation to the Developer model
Fix glyphicons work
Make developer name really big.
Stylize GitHub API repo results with icons and schema.org/Code microdata

Fixes #2
Build OPIC URL through model, instead of view constructing URL
Add info tooltips for elements that come via API requests

The info icons will help other developers know that pieces of the page come
from external API requests, thus spreading knowledge that APIs are available.