MainWP Client Reports Extension 4.0.13

* Updated: extension UI/UX redesign
* Updated: support for the MainWP 4.0

Fixed: an issue with sending scheduled reports on a specific setups
Fixed: an issue with inserting tokens from the tokens menu
Added: new PDF library
Added: support for changing date format in the GA chart
Added: mainwp_client_report_generate hook

* Fixed: an issue with sending multiple reports at once
* Fixed: typo
* Updated: scheduling process to send reports at local time