Fix APP_URL being called SITE_URL

resources/stubs/installer/config.stub

@@ -10,7 +10,7 @@ return [
     // Overrides config/app.php
     'app' => [
         'name' => '$SITE_NAME$',
-        'url'  => '$SITE_URL$',
+        'url'  => '$APP_URL$',
 
         // When live, 'env' should be 'prod'
         'env'   => 'prod',

resources/stubs/installer/env.stub

@@ -15,7 +15,7 @@
 APP_KEY='$APP_KEY$'
 APP_NAME='$SITE_NAME$'
 SITE_NAME='$SITE_NAME$'
-SITE_URL='$SITE_URL$'
+APP_URL='$APP_URL$'
 APP_ENV=$APP_ENV$
 APP_LOCALE=$APP_LOCALE$
 LOG_LEVEL=debug

resources/views/system/installer/install/steps/step2-db.blade.php

@@ -22,7 +22,7 @@
         <td>Site URL</td>
         <td style="text-align:center;">
           <div class="form-group">
-            {{ Form::input('text', 'site_url', Request::root(), ['class' => 'form-control']) }}
+            {{ Form::input('text', 'app_url', Request::root(), ['class' => 'form-control']) }}
           </div>
         </td>
       </tr>