Damyon Wiese authored Oct 20, 2016 and Dan Poltawski committed Jul 11, 2017

The add/roles thing was only converted to bootstrap 2/4 markup and the yui left in place.

The modal for adding users to a course was unsavable so I rewrote it with an mform in a popup, still calling
the same (barely) modified ajax script.

The webservice for searching cohorts was taken from admin/tool/lp and moved into /cohort. I added a generic "cohort"
mform element at the same time.

The webservice for searching for users was taken from the original ajax script.