Upgrade to FontAwesome 4.2.0

- Removes the local cached copy and just relies on the CDN
- Updates the relevant classes to point to new stuff
- Changes the Uber widget icon from a `time` to a `taxi`
- Changes the B-Cycle icon to use FontAwesome
- Corrects faulty Fucks Given meter
Fix the meter to be a bit more accurate.
Merge pull request #19 from websages/feature/upgrade-font-awesome

Upgrade to FontAwesome 4.2.0