Rescue 422 response when unsubscribing from a repo with Curry

GitHub will respond with 422 when you attempt to unsubscribe from a repo
that doesn't exist, which is raised as Octokit::UnprocessableEntity.
This rescues Octokit::UnprocessableEntity so you can remove watched
repos that have been deleted and logs the exception.
Bump chef-legacy
Improve/expand Supermarket migration metrics

The previous metrics gave a helpful but simplistic overview of the
status of the import by comparing raw Supermarket counts to raw
Community Site counts. The new metrics show how many records of various
types were imported into Supermarket and roughly how many records could
potentially be imported from the Community Site.

In the case of cookbook versions and consequently supported platforms,
the comparison will not be 1-1. This is because there are a dozen or so
cookbooks on the community site which have duplicate cookbook versions
with the same version number. These duplicate cookbook versions also
have duplicate associated platform versions records. Because we don't
import the duplicate records, the numbers don't match up exactly.
Better column breaks on user profile

To prevent text from overlapping adjust the user profile sidebar to be
wider on smaller displays.
Adjust user menu to accommodate watched repos

Admins in addition to the regular user menu items also have a watched
repos link which wraps at the current menu width this adjusts the menu
width so this link no longer wraps.
Adjust community stats wrap

Adjust the size and padding of community stats so they don't wrap on
smaller display sizes and can handle large numbers.
Adjust beta banner so it works in Firefox

Firefox users should also enjoy the beta banner adjust the styles/markup
so they can.
Fix collaborator dropdown font

The collaborator dropdown font shouldn't be times new roman.
Enable redcarpet fenced code blocks

Markdown should format fenced code blocks, so enable this feature in
redcarpet.
Adjust collaborator dropdown

Since hover doesn't work so well on mobile anyway changes dropdown to
only display when avatar is clicked on and also resolves some visual
issues with the dropdown.
Refine breakpoints a bit more

Refine breakpoints for cookbook stats a bit more remove some unused
SCSS.
Move collaborator markup back into gravatar container
Merge pull request #448 from opscode/wrapping-issues

Wrapping Issues
Add markdown helper specs

Add markdown helper spec for fenced code blocks and autolinking with
target blank.
Allow admins to revoke admin role

Implement the ability for admins to revoke other admins of their admin
role. Also change the way the admin role is granted so it doesn't
overwrite all of the users roles it just adds the admin role to the
user.
Merge pull request #450 from opscode/md-fenced-code-blocks

Enable redcarpet fenced code blocks
Merge pull request #428 from opscode/bump-chef-legacy

Bump chef-legacy to 1.1.1
Merge pull request #423 from opscode/admins-ungrant-admins

Allow admins to revoke admin role
Rescue from missing Pull Requests

In the event that a repo or pull request gets deleted we shouldn't raise
an exception when Octokit 404s we should just log it and move on.
Merge pull request #427 from opscode/curry-deleted-repos

Rescue 422 response when unsubscribing from a repo with Curry