added modmail with some simple features (chat between user and moderator), and initial server selection (currently allows all servers, and does not consider the modmail feature)
added the initial commands, not all of them hold logic currently
added some checks to not crash when a command has null configuration
changed systemconfig to also have a long value, because double is not fit for all cases
added locking mechanism, to effectively lock the whole table without using the ... proper locking mechanism (needs to be reviewed)
changed interface in channel service to be a message channel instead of a textChannel
changed starboard post to be a user in a server instead of only user
added method to convert the user initiated context to a concrete command model
added method to find if a template exists
added method to render a context aware model
added banid command
changed ping command to use templates
added userjoin/userleave event
added guild to command context
refactored post target service
added logging output to initial loading
added server_id to postTarget
added leave log postTarget
