Add unlink-icon CSS.
Add unlink icon to Facebook logo.
Merge branch 'master' into add-unlink-icon-top-right-10
Add a bi-directional binding to user on facebook-form directive.
Change text to "Update" for Facebook linking/unlinking.
Add comment to spin.js
Move userService update to its own function for facebookForm directive.
Implement update behavior for remaining social buttons.
Hide the unlink icon for facebook logo.
Add unlink ability.

* Implement function to save user profile when clicking unlink icon.
* Add listener to watch for changes in profile.*_url.
Style the unlink x icon.
Add ng-show and ng-class behavior to unlink (x) icon.
Change Update button to Link To ... button.
Add 'unf' gem to shut up 'fog' gem warning messages.
Add staging configuration to carrierwave initializer.
Merge pull request #23 from vitaliyg/upload-image-not-saving-profile-21

Upload image not saving profile 21
Install unf gem.
Merge branch 'master' into add-unlink-icon-top-right-10
Do not show social media form on unlink.
Minor code cleanup.