added regstration page urls to apisrv/installation; closes #355

Author: following5

okapi/services/apisrv/installation.php

@@ -29,6 +29,8 @@ public static function call(OkapiRequest $request)
         $result['okapi_version_number'] = Okapi::$version_number;
         $result['okapi_revision'] = Okapi::$version_number; /* Important for backward-compatibility! */
         $result['okapi_git_revision'] = Okapi::$git_revision;
+        $result['registration_url'] = $result['site_url']."register.php";
+        $result['mobile_registration_url'] = null;
         return Okapi::formatted_response($request, $result);
     }
 }

okapi/services/apisrv/installation.xml

@@ -52,6 +52,16 @@
                 project installed on this Opencaching site, <b>or null</b>,
                 when it could not be determined.
             </li>
+            <li>
+                <b>registration_url</b> - URL of the Opencaching site's general
+                page for registering a new user account.
+            </li>
+            <li>
+                <b>mobile_registration_url</b> - URL of the Opencaching site's
+                page for registering a new user account, which is optimized
+                for small mobile displays, <b>or null</b> if no separate
+                mobile-optimized page exists.
+            </li>
         </ul>
     </returns>
 </xml>