Complete subcommittees feature
- Store the current parent and subcommittee (previously selected committee, url)
- Menu visual feedback (grey)
- Use the parent committee url for the website link
- Handle committees with no subcommittee
      no select
      Message
- If current committee, then subcommittee list is pre-populated with it subcommittees
- If no previous committee then no select drop-down
- if we uncheck the subcommittee checkbox, revert the map to the committee view
style subcommittee select box