feat: returns the user details on successful account modification

Closes #8

README.md

@@ -28,6 +28,20 @@ Fields:
 }
 ```
 
+Success:  
+Each value is either a string or ``null``.
+```json
+{
+  "result": "success",
+  "success": {
+    "cn": "Firstname Surname",
+    "mail": "Email address",
+    "skDiscord": null, 
+    "sshPublicKey": "ssh key"
+  }
+}
+```
+
 Changing ``userPassword`` requires the existing password in teh apssword field and the new one in teh value field.
 
 ### POST /ldap/new