[Imapsync] Add token status badge for user login flow

data/web/lang/lang.en-gb.json

@@ -1265,6 +1265,9 @@
         "source_oauth_flow_user": "User login (authorization code)",
         "source_flow_badge_app": "Client credentials",
         "source_flow_badge_user": "User login",
+        "token_state_issued": "Token issued",
+        "token_state_pending": "Token pending",
+        "token_state_failed": "Token failed",
         "source_authorize_endpoint": "Authorize endpoint",
         "source_userinfo_endpoint": "Userinfo endpoint",
         "source_redirect_uri": "Redirect URI",