Add closing p tags to Manage Profile > Agreements.
Create the contribute sidebar and styles.

When viewing the contribute tables, display a sidebar with the list of repos
that Supermarket watches aka Chef's open source projects, and if the user is
signed in, display user-specific information about their agreeemnts.
Create the Become a Contributor page

This re-organizes the file structure of where the contribute/sidebar is located,
while creating the route, controller action and spec for the page to point
people to in order to understand what it means to become a contributor.

The content is not ready in this commit, but the framework is there.
Create the All Signers table in Contribute.

- lists and displays all of the folks who have signed either an ICLA or CCLA.
- changes the menu nav to Contributors instead of Contribute.
- implements User.all_cla_signers
Scale all elements' font-size for media queries.

Create a more uniform responsive scaling of text elements by changing the
font-size for all text elements. Previously, p, li, span and blockquote elements
were not being scaled which caused disproportionate sizes of text.
Expand upon the Become a Contributor page.

- Add in info and content that explains the steps to becoming a contributor.
- When a user links their GitHub account, redirect them back to
become-a-contributor to keep them on the path to becoming a contributor.
Make Contribute content and sidebar responsive.
Update User.all_cla_signers to use 1 SQL query.

This also simplifies the all contributors table to only display the users'
names.
Merge pull request #488 from opscode/enhance_contribute

Enhance the Contribute section