2020-07-21 Tuesday

- fixed several commands that try to guess an online player by the entered name not properly handling the case when the entered name is not unique
- added missing membership checks for certain battlegroup commands
-- it is no longer possible to change the leader to someone not in the battlegroup making the battlegroup effectively leaderless
-- it is no longer possible to make someone not in the battlegroup a moderator
- added missing membership checks for certain chatgroup commands
-- it is no longer possible to change the leader to someone not in the chatgroup