ProRank - Analyzer stats website 4.2.1

- Improve speed PDF
- Added Affiliate domain program
- Added Notifications module (Send a email to admin triggers)
- New user
- New Site
- Updated Site
- Added new option to enable/disable historical data

- Fixed bug token background process
- Added option for use google screenshot

- Added more info for broken link cheker
- Added process old website
- Improved DNS Records
- Added Social data block
- Added Domain available block
- Improved UI/UX
- Add background process (Curl Support)