automatically approve invited users on forum where moderators must approve (keep in mind only moderators can invite)

speed up specs a touch
allow invite controller to accept an email in absence of user (cleans up API)

app/models/invite_redeemer.rb

@@ -18,6 +18,7 @@ InviteRedeemer = Struct.new(:invite) do
     add_to_private_topics_if_invited
     add_user_to_invited_topics
     send_welcome_message
+    approve_account_if_needed
     notify_invitee
   end
 
@@ -66,8 +67,12 @@ InviteRedeemer = Struct.new(:invite) do
     end
   end
 
+  def approve_account_if_needed
+    invited_user.approve(invite.invited_by_id, send_email=false)
+  end
+
   def notify_invitee
     invite.invited_by.notifications.create(notification_type: Notification.types[:invitee_accepted],
                                            data: {display_username: invited_user.username}.to_json)
   end
-end
+end