fix double OAuth.html template display

as webasystOAuthAction() is always executed by waOAuthController
immediately after successfull authorization and call to afterAuth(),
there is no need to execute this action in descendant controllers.
Add courier shipping rate by quantity config

Added locale messages & template changes to allow user configure plugin
shipping rate by total quantity
fix auth redirect with NoScript

When user with NoScript enabled clicks social authorization button, no
auth window pops up and thus we must redirect user to correct page after
authorization directly in browsed page.