On the page administrativeMonitor/GitHubHookRegisterProblemMonitor/ there is a list of repositories which have issues with their webhooks.   It would be useful if either you could attempt re-registering all hooks listed on the page or if in addition to the "ignore" button each entry had a "re-register hook" option.

 

This would prevent controllers with a large number of builds needing to make thousands of API calls if 5-10% of webhooks are broken.