Display collaborator language when present.

When viewing Manage Profile > Collaborations, only display information about
cookbook collaboration when the user collaborates on cookbooks. This makes the
page a little more straight-forward when empty.
Set the @name of a cookbook in the deletion mailer

When a cookbook is deleted, the name was not being displayed because it was not
being set in the mailer. This sets it in the mailer.
Display cookbook deleted notification mail preview
Remove cookbook partial gravatar styles.

The cookbook partial gravatar styles deviate from the other styles, which breaks
the consistency of the gravatar. This removes the shadow and outline to make it
consistent.
track hits in segment.io
adding a hit counter for /universe
switch to label/total instead of universe
Revert "Process archives in a backwards-compatible way"

This reverts commit 21114b276a68dd677038479f1cfab56b24778235.

Conflicts:
	.travis.yml
	Gemfile.lock
Merge pull request #546 from opscode/universe-metrics

Track hits to /universe in segment.io
Merge pull request #567 from opscode/cookbook_partial_gravatar_shadow

Remove cookbook partial gravatar styles.
Merge pull request #566 from opscode/cookbook_delete_mailer

Improve the Cookbook Deleted mailer
Merge pull request #564 from opscode/collaborator_on_bug

Display collaborator language when present.
Merge pull request #530 from opscode/only-accept-gzip-tarballs

Revert "Process archives in a backwards-compatible way"
Prevent full disks by lowering production log level to :warn
Merge pull request #568 from nathenharvey/increase_production_log_level

Prevent full disks by lowering production log level to :warn
Add background to pre to improve legibility
Merge pull request #570 from justincampbell/pre-background

Add background to pre to improve legibility
Link Supermarket logo to Supermarket in emails.
Add link to Supermarket in email footers.
Ensure @to is set in mailer actions.