Remove players

[eneko]

Ability to remove players that no longer want to play or no longer work at the company.

[dblock]

:+1:

Want to try to implement this @eneko or I can prioritize this if http://playplay.io/#sponsors ;)

[eneko]

I could give it a try, but haven't set up a dev environment yet. Will try.

[dblock]

I think we want captains to be able to unregister @name and players to do unregister themselves. That shouldn't delete the user record though, that would break seasons history, existing challenges, etc, but probably mark the user deleted and show <deleted> in history or stats. Captains shouldn't be able to unregister themselves, but would be required to step down first.

[eneko]

Makes sense. I think the removed users should no longer appear on leaderboards, but it would be good to keep them on the matches history.

[dblock]

I've implemented unregister in https://github.com/dblock/slack-gamebot/commit/d3379293f0c502fd97598efc680ed68d5ad5639c. It will make its way to playplay.io in the next 24 hours. It removes someone from the leaderboard and from the ability to play, but doesn't purge them from match history or anything. Users can re-activate themselves. Suggestions of whether we need to do more, welcome!

[dblock]

Deployed.

https://twitter.com/playplayio/status/753954352511844353