Adds Facebook share modal.
Moves lightbox CSS to its own LESS file.
Update facebook-share view to include csrfToken and badge body hash in order to pass necessary data to Facebook lib.
Make use of nope class for cancel button.
Fixes alignment of buttons on modal by styling the btn class instead of the button element. Checked other uses of buttons on the backpack, and no visible problems to this approach since the btn class is already used by Bootstrap.
Sets width of facebook share div to 100%, and adjusts some markup to display content as blocks/newlines.
Call Facebook SDK and initialize app upon loading.
Adds social media js to layout.html. Should probably be removed later in favor of loading as-needed.
Adds function to backpack controller for Facebook sharing.
Adds js to backbone view, once a user clicks to share their badge on FB it calls the FB API.
Removes if statement for not authorized apps -- leads users to login instead of flashing error to screen.
Initial addition of facebookSharing to the backpack controller tests.
Updates badge sharing variables to be camel cased in view and backpack controller.
Hide 'connected accounts' on settings and 'share' button on badge view.

This is only temporary, we'll re-enable things within the next week.

This fixes #731.
Use Badge#getImageUrl in views.
Use imageUrl attribute.
Adds Facebook share modal.
Adds Facebook sharing route to app
Fix some merge conflicts