feat: introduce User Management page (#299)

Author: patrickmichalina

data/security.rules.json

@@ -19,6 +19,7 @@
       }
     },
     "users": {
+      ".read": "auth != null && root.child('users').child(auth.uid).child('roles/superadmin').val() === true",
       "$uid": {
         ".read": "auth != null && auth.uid == $uid || root.child('users').child(auth.uid).child('roles/superadmin').val() === true",
         ".write": "auth != null && auth.uid == $uid || root.child('users').child(auth.uid).child('roles/superadmin').val() === true"

data/seed.settings.json

@@ -61,7 +61,7 @@
       }
     },
     {
-      "inHead": false,
+      "inHead": true,
       "element": "script",
       "value": "window.ga=window.ga||function(){(ga.q=ga.q||[]).push(arguments)};ga.l=+new Date;ga('create', 'UA-107089312-2', 'auto');",
       "attributes": {