* Fix logging of GetWebhook errors
Yeah let's just not log the error only stack trace.
* I have spent more time today cleaning up garbage than coding new shit, and I am mad
Cleans up the custom vote Discord webhook code because I *happened* to lay my eyes on how completely terrible it was and immediately found an obvious bug with it.
Also did basic QA because jesus christ: it more clearly reports pending votes, properly indicates cancelled votes, improves footer formatting, better error logging, all the usual shit.
Requires https://github.com/space-wizards/RobustToolbox/pull/5375 to avoid test failures
