* Updated settings page interface - added logo, added context help
* Moved settings page to underneath Super Speedy
* Updated license checker code
* Minor optimisation in SQL_CALC_FOUND_ROWS code
* Updated SQL_CALC_FOUND_ROWS to not run for REST API requests - note: this will be reintroduced in future, but with a better solution. REST API calls tend to fetch page after page, so in their case, I could allow SQL_CALC_FOUND_ROWS on the first call, then cache the total count for page 2+ so that REST API exports would be faster
