Treat tokens for deleted groups as invalid

Previously this exception was unhandled, and so the user saw an error
that did not make it clear there was no point trying again.

Author: jsharkey13

src/main/java/uk/ac/cam/cl/dtg/segue/api/AuthorisationFacade.java

@@ -474,9 +474,8 @@ public Response getTokenOwnerUserSummary(@Context final HttpServletRequest reque
                     .cacheControl(getCacheControl(Constants.NEVER_CACHE_WITHOUT_ETAG_CHECK, false)).build();
         } catch (NoUserLoggedInException e) {
             return SegueErrorResponse.getNotLoggedInResponse();
-        } catch (InvalidUserAssociationTokenException e) {
-            log.info(String.format("User (%s) attempted to use token (%s) but it is invalid or no longer exists.",
-                    currentRegisteredUser.getId(), token));
+        } catch (InvalidUserAssociationTokenException | ResourceNotFoundException e) {
+            log.info("User ({}) attempted to use token ({}) but it is invalid or no longer exists.", currentRegisteredUser.getId(), token);
 
             return new SegueErrorResponse(Status.BAD_REQUEST, "The token provided is invalid or no longer exists.")
                     .toResponse();