MDL-67818 auth_none: Moved to improved Check API

AMOS BEGIN
 MOV [check_noauth_details,auth_none],[checknoauthdetails,auth_none]
 MOV [check_noauth_error,auth_none],[checknoautherror,auth_none]
 MOV [check_noauth_name,auth_none],[checknoauthname,auth_none]
 MOV [check_noauth_ok,auth_none],[checknoauthok,auth_none]
AMOS END

auth/none/classes/check/noauth.php

@@ -39,12 +39,12 @@
 class noauth extends \core\check\check {
 
     /**
-     * Constructor
+     * A link to a place to action this
+     *
+     * @return action_link
      */
-    public function __construct() {
-        $this->id = 'noauth';
-        $this->name = get_string('check_noauth_name', 'auth_none');
-        $this->actionlink = new \action_link(
+    public function get_action_link(): ?\action_link {
+        return new \action_link(
             new \moodle_url('/admin/settings.php?section=manageauths'),
             get_string('authsettings', 'admin'));
     }
@@ -54,15 +54,14 @@ public function __construct() {
      * @return result
      */
     public function get_result(): result {
-
         if (is_enabled_auth('none')) {
             $status = result::ERROR;
-            $summary = get_string('check_noauth_error', 'auth_none');
+            $summary = get_string('checknoautherror', 'auth_none');
         } else {
             $status = result::OK;
-            $summary = get_string('check_noauth_ok', 'auth_none');
+            $summary = get_string('checknoauthok', 'auth_none');
         }
-        $details = get_string('check_noauth_details', 'auth_none');
+        $details = get_string('checknoauthdetails', 'auth_none');
 
         return new result($status, $summary, $details);
     }

auth/none/lang/en/auth_none.php

@@ -25,7 +25,7 @@
 $string['auth_nonedescription'] = 'Users can sign in and create valid accounts immediately, with no authentication against an external server and no confirmation via email.  Be careful using this option - think of the security and administration problems this could cause.';
 $string['pluginname'] = 'No authentication';
 $string['privacy:metadata'] = 'The No authentication plugin does not store any personal data.';
-$string['check_noauth_details'] = '<p>The <em>No authentication</em> plugin is not intended for production sites. Please disable it unless this is a development test site.</p>';
-$string['check_noauth_error'] = 'The No authentication plugin cannot be used on production sites.';
-$string['check_noauth_name'] = 'No authentication';
-$string['check_noauth_ok'] = 'The no authentication plugin is disabled.';
+$string['checknoauthdetails'] = '<p>The <em>No authentication</em> plugin is not intended for production sites. Please disable it unless this is a development test site.</p>';
+$string['checknoautherror'] = 'The No authentication plugin cannot be used on production sites.';
+$string['checknoauth'] = 'No authentication';
+$string['checknoauthok'] = 'The no authentication plugin is disabled.';