UI change course catalog
When on courses catalog, clicking on the course image opens the lightbox pop-up with course description.
Actually, when clicking on image, it shows the description, and clicking on the title goes to the course itself. More than that, there is the classification stars and, under, the little buttons with the info link and the subscribe link.
In my opinion, is more user friendly and logical (if the user is registered) when the user clicks on the course image and title "both" to go directly to the course.
If the user is unregistered and the subscribe option is available to the course, show it's description with a subscribe button. If not only the course description in the lightbox.
With mobile content in mind (touch), maybe apply the link to the div/li or other element instead of one to the link to the image and other to the course title.
This should change the php function the iterates on the available courses.
(Sorry, I'm personally still learning git, so I am not yet ready to contribute to the active development 'per se'. Still struggling with the Question type on tests.)