Added accept button, worked on pre/post match accept

Backend
- Runs on 0.0.0.0 now for hydr0 deployments
- Fix aztec map image
- Fix relativedelta import
- Renamed ServerType to SERVER_MATCH
- Added Server.getMatch to get a lobbies match
- Removed unused Server.getActiveMembers
- Added Lobby.userLeave, with refactors for Lobby.kickUser
- Fixed prior typos
- Match function additions
- Added handling for user accepts
- Do not allow lobby to queue if it contains more than 5 members
- Fixed typo in task_user_timeout which caused users to always be timed
out
- Write basic stats
JS
- Added accept workflow, incl. clicking accept and others clicking
accept (untested)
- Added ding sound effect for when someone accepts