* Core/DBLayer: Add QueueSize() method Add QueueSize() method to database objects (Login, Character and World) that returns how many tasks are queued. Include the queue size of the 3 databases in ".server debug" command * Make the code less threadsafe * Send data to InfluxDB * Update grafana dashboard (cherry picked from commit 96dc110f4a353871ac74c82ff4b1bcc4c34156f3)