Add filter options
As I work the site it would really be nice to sort out "touched" posts from "untouched" posts. We can now filter by "met/unmet", tags and locked. But often an organizer has made a comment or sent an email but doesn't think it's appropriate to actually lock the post. Particularly with volunteers, it's too easy to skip a post altogether so the volunteer is never contacted. Filtering by those which have had no communication would help.