Hi,

1. Optimisation online operators widget.
2. Svelte fixes for Nan being presented in departments statistic widget.
3. Various small fixes.

https://github.com/LiveHelperChat/livehelperchat/compare/4.30v...4.31v

For everyone who will be upgrading please read updated upgrade instructions.

For update just follow standard update procedure. For manual update it's update_302.sql