[REF] Ensure that url that is stored as context is generated correctl…

[seamuslee001]

…y for backend usage in wordpress

Overview

On a client site I found that I was being redirected to a front end style url wp-admin/civicrm/admin/ which didn't work but running this through url() fixed the problem

Before

url not correctly formatted when pushed into pushScope

After

Wrap the url in a call to url() function to ensure backend url is correctly formatted

ping @kcristiano @eileenmcnaughton

[civibot]

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[demeritcowboy]

Putting merge-ready just in case there's something wordpress-specific here. e.g. maybe "forceBackend" has some meaning (it doesn't in drupal)