Added a few things

- RTV votes can be configured to end early if a percentage of all
players have voted.
- You can set Shine to refresh users from the web in a fixed interval
automatically using the two new config options, "RefreshUsers" and
"RefreshInterval".
- Fixed an annoyance/bug where reloading users mid-game from the web
would wipe the user data if the web request failed. It now keeps hold of
the old data instead.