Utilize select_related() for user & user profiles. This commit also removes the caching of the avatar URL in the avatar template tag. This is because we are now using select_related, so we already have the profile & avatar when we get to the tag. Thus we don't need to waste time querying the cache. Removed an apparently unused member map template as well.

Markup language: 
Markdown

Description:
A basic Markdown markup set with Headings, Bold, Italic, Picture, Link, List, Quotes, Code, Preview button.

Install:
- Download the zip file
- Unzip it in your markItUp! sets folder
- Modify your JS link to point at this set.js
- Modify your CSS link to point at this style.css