Notes: Groups

* members can get admin status/access on a group
* creator starts as admin
* admins can (un)designate other admins
* creator gets protection from de-adminning?  (would simplify code not to handle this case)
* admin controls:
  * membership
    * membership system: set to one of:
      * anyone can join anytime
      * anyone can request membership; admin must approve
      * invite only
    * admin can manually add members
    * admin can manually remove members
  * read access: set to one of:
    * anyone can read
    * only members can read
  * write access: set to one of:
    * anyone can write
    * only members can write
  * revoked group membership should result in the loss of access to any group posts

Interface

• separate river view from group view
• on the separate group view only group posts (+ comments) are displayed
• add groups to the sidebar