New view to manage labs purchasing in edX.
Update labster.
Implement 'pay with stripe' button with directive.
Connect lab list to the API.
Only allow admin to see the link for now.
Add license list and purchase list page.
Merge branch 'labster/feature/backoffice' into labster/master
Update labster.
Buy new license using API.
Redirect to invoice detail after buying labs.
WIP invoice detail
update labster
update labster
Update labster
Update django's version to 1.4.15.
rename invoice to payment in internal
show invoice detail from API
purchase list page
update payment list and detail with latest response from API
add moment.js (cdn)