Add joindiaspora.com service

services.json

@@ -13,6 +13,13 @@
     "description": "Federated social network. Friendica federates with the whole Fediverse using multiple protocols. Register at <a href=\"https://friendica.feneas.org\">friendica.feneas.org</a>.",
     "access": 0
   },
+  {
+    "url_icon": null,
+    "fa_icon": "fas fa-pencil-alt",
+    "name": "Diaspora",
+    "description": "Federated social network. Diaspora is a decentralized social network, consisting of many individual servers, called \"pods\". The current pod <a href=\"https://joindiaspora.com\">joindiaspora.com</a> is closed and therefore only available to members (ask on the <a href=\"mailto:members@feneas.org\">members@feneas.org</a> mailing-list).",
+    "access": 2
+  },
   {
     "url_icon": null,
     "fa_icon": "fas fa-file-alt",