[OzzModz] XFMG: Force Rules Accept For Media - XF2 2.0.0

This addon just adds a checkbox "I have read and accepted the category rules" with a link to rules while posting media.
This can be used for forcing users read rules for specific categories before creating media. The "Save" button for saving a media item is disabled when the checkbox is not checked. The "Save" button for saving a media item will become active once the user checks the checkbox. The rules URL is set per category directly in adding/editing a media category.