Add game.starting.team-message* TransKey message keys.
Deprecate all of the SkyMessage per-arena-message-format stuff, as they aren't really used as far as I can tell. This doesn't remove them completely, so they will still be in the config if they were before, but it does remove all usage of them.
Add an 'includePrefix' boolean to each TransKey, so that the SkyTranslations implementation can automatically prefix them with the configured prefix. This was previously done within SkyMessages, but since that's being deprecated, SkyTranslations will now do this.
Remove extra line in SkyStatic.