Some changes to error emails:
Some changes to error emails:

- Use "hide" in cfdump instead of deleting from the struct because it can handle Java objects as well (the Exception is a Java object and not a struct).
- Display all non Wheels lines as the error location.
- Added some more info like referer and user agent that makes sense to have in the summary.
- Added port to the URL.
- Skip cause since it's just a copy of rootCause.

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