added optional note parameter for close
fixed state not being saved in database for mod mail thread
changed logging of mod mail to be templated, instead of replaying the messages
added reaction to indicate the user, that the message was processes by modmail
fixed future handling for user message replies (we blocked)
added header for initial information about the user when he opens a thread
fixed duration formater resulting in new lines
added general duration formatting to freemarker (its a builtin method currently
added source channel attribute to starboard post
added exception logging to immediate reminders
