Add Doge

Hello,

**The issue:**
This website doesn't show to the end user that we are all people of the internet and in fact also use IRC and as a result care about memes. This really destroys the user experience.
**PR Breakdown:**
This PR solves mentioned issue by adding randomly appearing doge sayings to the page, which not only inform the viewer that we in fact care about Doge, but also adds a fun and *unique* aspect to the web presence.
**Related Links:**
CB-1337: Associated CraftBukkit PR
[Wikipedia entry](http://en.wikipedia.org/wiki/Doge_%28meme%29)
**Related images:**
![Doge](http://www.fanaru.com/doge/image/18352-doge-only-doge-without-text.jpg)

Thanks!