Feat: Have "Only Show Courses in Session" switch be available for searching courses

The "Only Show Courses in Session" switch is useful, however I see it can only be used when you've selected a course from the main course menu. It doesn't show up when searching directly for a course.

I like to search by course level, ie "CSC 4" to get the 400 level courses, and so having this switch would be useful because most 400 level courses aren't in session.