Suggestion: restrict privacy_notice_markup to Settings page

Just a minor suggestion:

As far as I can tell, the only place the ConstantContact_Settings::privacy_notice_markup() is used is when you click on the checkbox on the Settings page for Google Analytics. If the user never clicks that box, the ‘ctct_privacy_policy_status’ option is never set, and that notice gets generated on every admin page since it’s hooked in to the ‘admin_footer’ hook (though it’s hidden with CSS). The reason I noticed this is because I had a misconfiguration that resulted in your CSS not being loaded, so I could actually see it on every admin page.

A simple fix might be something like this in class-settings.php:

public function privacy_notice_markup() {
    if ( !$this->on_settings_page() || $this->privacy_policy_status() ) {
        return;
    }
...
}

I’m using plugin version 1.2.5.