Redirect away from PMPro pages and otherwise hide PMPro activity

[ideadude]

Add an option to redirect users from PMPro pages to the WC equivalents. So the PMPro levels page should redirect to the /shop/ page.

The /membership-account/ page should redirect to the WC account page, etc

Maybe move some of the PMPro account info onto the WC account page (like we did for BuddyPress).

Billing info.

Let's discuss how to default this. Maybe true for brand new installs, but default to false for existing installs.

[andrewlimaza]

Maybe we could just add a setting to 'Advanced Settings' in PMPro for the redirect pages and leave it as false by default?