Add the Ability to Filter Activity Listing by Sponsoring Committee
Currently the activity listing can only be filtered by activity type and branch, but not by the sponsoring committee. In most cases this isn't a problem because the committee is the same as the activity type, but there are a few "community" committees, Retired Rovers, 20-30s Somethings, Singles. With the current system trips sponsored by these committees are basically impossible to find. The audience filters would work great for this, except that any trip can pick any of them, so most trips pick more than one.
Can we either have:
1) A way to filter the activity results by the sponsoring committee
2) Restrict the audience selections to the committee based on that audience