Add title to tag section on fronts, tag and "all" pages

### Fronts
![screen shot 2014-10-08 at 18 01 20](https://cloud.githubusercontent.com/assets/1492162/4563294/d6374aac-4f0c-11e4-9b2b-092c1deaac04.png)
to
![screen shot 2014-10-08 at 18 01 00](https://cloud.githubusercontent.com/assets/1492162/4563298/db853050-4f0c-11e4-927b-fa86a4f62669.png)

### Tag pages
![screen shot 2014-10-08 at 18 00 49](https://cloud.githubusercontent.com/assets/1492162/4563307/ed2b014a-4f0c-11e4-9aa8-40dd3dbba7ca.png)
to
![screen shot 2014-10-08 at 18 00 27](https://cloud.githubusercontent.com/assets/1492162/4563306/ed266d2e-4f0c-11e4-9185-9504592f8d0b.png)

### All pages
![screen shot 2014-10-08 at 18 00 05](https://cloud.githubusercontent.com/assets/1492162/4563318/042204ca-4f0d-11e4-8b2e-e7b032040521.png)
to
![screen shot 2014-10-08 at 17 59 44](https://cloud.githubusercontent.com/assets/1492162/4563319/04277cac-4f0d-11e4-867e-f9b6928f0cff.png)