Securly Plus wót grimsteel

Improves the Securly Flex user experience by adding a dark mode option, more customization options, and breathtaking performance improvements.

Adds options to:
- change the default schedule tab
- change the default screen that shows up when you go to https://flex.securly.com

https://github.com/grimsteel/securly-plus

https://securly-plus.kameswar.com

Securly is a registered trademark of Securly, Inc.