Balancing, ranked leaderboard, shop rework

Rebound v0.65.0 is live
[h2]RANKED & MATCHMAKING[/h2]
- We did a small rebalancing of the rank distribution (see below for the new distribution curve)
- Added a leaderboard for ranks (found in the rankings tab). You can find the top 50 rated players there (with 50+ matches played)
- Fixed a critical issue that impacted match balancing. Many matches will have much better balancing now.
- Re-added the leave warning. You get 1 free leave per hour. Leaving during the hour grants you a 5 minute matchmaking ban.
[h2]SHOP REWORK[/h2]
- Redesigned the shop to be easier to navigate and have a better user experience
- Added a 'Secret Stash' which is a personalized shop for you (yes, you!) - it'll only contain items you don't have yet.
[h2]COSMETICS[/h2]
- Added a LED jersey and LED cap
- Added a Goosan backpack
[h2]GENERAL FIXES AND IMPROVEMENTS[/h2]
- Improved the connections to the Slapshot Services. It should cause less chat disconnects and server crashes.
- Made a potential fix for the wrong rank icon being shown at the end of the match
- Streamers: The clubs command now allows you to force a team to use a specific kit (more info by using the clubs help command)

GLHF!