Added new pages to sidebar

src/.vuepress/config.js

@@ -41,6 +41,17 @@ module.exports = {
           ]
         }
       ],
+      '/admins/': [
+        {
+          title: 'Administrative Dokumentation',
+          collapsable: false,
+          children: [
+            '',
+            'quickstart',
+            'installation'
+          ]
+        }
+      ],
     }
   },
   plugins: [

src/admins/installation.md

@@ -0,0 +1 @@
+# Installation