Allow a course to have multiple course types GH1640
I'd like to be able to list a course under two categories. For example Winter Travel for Everett was snowshoeing and cross country skiing so should be able to be listed under both. Scramble leader seminars or hike leader seminars ideally should get an outdoor leadership and the activity type tag
Courses now can have multiple course types. THis lives in the course template and is particularly useful for courses like winter travel that need to be earmarked as Snowshoe and Cross Country Ski or hiking and backpacking seminars that cover both activity types.