* Added "migration of migrations" to transfer the data from the __diesel_schema_migrations table to the refinery_schema_history table
* Removed all down migrations as refinery does not support down migrations
* Changed all diesel up migrations to refinery naming format
* Added --sql-log-mode parameter to veloren-server-cli to allow SQL tracing and profiling
* Added /disconnect_all_players admin command
* Added disconnectall CLI command
* Fixes for several potential persistence-related race conditions
* Improved server error message for character load errors.
* Added server logging for item asset load errors during character load.
* Fixed character select error message dialog not supporting long messages.
- Handle/notify the client of errors during character load by returning to character select with the error, clean up client and server states
- Add player_uuid check when loading character data.
big combined updates.
- Add a timer to the stats persistence system and change the frequency
that it runs to 10s
- Seperate the loading of character data for the character list during
selection, and the full data we will grab during state creation. Ideally
additional persisted bits can get returned at the same point and added
to the ecs within the same block.
