Fixing/adding a few misc. things

[robotzurg]

• Changed how leaderboard roles are handled to hopefully make them actually set this time (though still no auto adjusting others yet)
• Added custom-stakes argument to random stake (default off)
• Added delete contest channel button for helpers only in contest match channels
• Renamed viewStats.ts to statsQueue.ts
• Changed /give-win autocomplete to be the proper user display name
• Chaned /stats queue to update the userQueueRole when run, so hopefully peoples roles can be more easily update (technically makes it a bit slower, but not by a significant enough margin to outweigh the benefits here, can roll it back if its bad)

[robotzurg]

Also just added a few graph adjustments to maybe fix up graphs a tiny bit (but honestly it needs an overhaul probably)