Switched section titles to h2 tags, added margin beneath panels, added b...


![screen shot 2013-09-05 at 7 33 53 pm](https://f.cloud.github.com/assets/662273/1092810/0c7148ee-168c-11e3-8fd5-d85bb5d52eb8.png)
...ackground color and font weight to links, added heart icon to mentoring slot info.