c62626227a
Previously, it would 404. While accurate, it's not a great user experience. Users can be offered invalid jump_to paths in the normal course of things, if course content disappears or they lose access to it. In both cases, they might be offered a resume URL in the courseware that would be to a now-invalid location. With this change, that invalid link will at least give them *something* (the first unit in the course) rather than an error page. This also (unrelatedly) fixes an exception when the learning MFE outline page tries to render a course that contains sequences with no children. AA-867
common ------ This directory contains common code shared between LMS and CMS, such as Mako templates, CSS, and Coffescript.