enable edit on Gitlab

docs/config.json

@@ -12,6 +12,10 @@
         "date_modified": false,
         "jump_buttons": true,
         "edit_on_github_": "iml-it/appmonitor/tree/master/docs",
+        "edit_on": {
+            "name": "Gitlab",
+            "basepath": "https://git-repo.iml.unibe.ch/iml-open-source/iml-backup/tree/master/docs"
+        },
         "links": {
             "Git Repo": "https://git-repo.iml.unibe.ch/iml-open-source/iml-backup"
         },