d16c9a804c
The `may_certify` function is used to determine whether a learner should be able to see that their certificate is ready. It is therefore entirely in the certificates domain. This remove may_certifiy and may_certify_for_course from the xmodule and course_overview apps and into the certificates app. The xmodule may_certify was not called outside of tests prior to this, and the other's were easily moved. In order to avoid circular imports, this also moved certificate_info_for_user out of the model code and into an API
common ------ This directory contains common code shared between LMS and CMS, such as Mako templates, CSS, and Coffescript.