Handle tokens not in idp response

inventory-app/oidc.py

@@ -47,7 +47,9 @@ def add_url_params(url, params):
 
 def add_session_tokens(session, r):
     session["access_token"] = r["access_token"]
+    if "id_token" in r:
         session["id_token"] = r["id_token"]
+    if "refresh_token" in r:
         session["refresh_token"] = r["refresh_token"]
 
 @page_oidc.route('/login-callback')