This contribution includes my two other ones due to the error in the folder path.

This contribution adds the following itens:
- correct the page rank function;
- add translation to portuguese (Brazil);
- add checksum value to the page rank function, in order to see the checksum value when admin shop owner click "GET PAGE RANK" button;
- add an item array "> Excellent" when the page rank is 10 (Ex. www.google.com).

This is not the full package. The complete version is 1.7.

***BACKUP YOUR FILES***

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