API docs ready for swagger-ui

.gitignore

@@ -2,4 +2,5 @@ backend/classes/Setting.php
 backend/cache
 backend/tmp
 backend/qr
+api/docs
 .idea

api/openapi.yaml

@@ -5,10 +5,6 @@ info:
   version: 1.0.0
   description: The restfull API of the jabber fingerprint keyring.
 
-servers:
-  - url: https://sabolli.de/ringfinger
-    description: Test server
-
 tags:
   - name: User
     description: A user that can login, store fingerprints and share them with other users.
@@ -353,6 +349,10 @@ paths:
                   example: 42
                 userSharedId:
                   $ref: '#/components/schemas/SharingUserId'
+              allOf:
+                - required:
+                    - userId
+                    - userSharedId
 
       responses:
         200: