HTML message links are mangled

[tubaman]

When creating a new campaign via the REST API, HTML message links get mangled with triple backslashes. The textmessage links are not affected(they work just fine). I've confirmed this by creating a campaign via the web UI, then creating a similar campaign via the REST API, and comparing the raw data in mysql.

[michield]

Yes, I'm aware of this, and it's very annoying. It's caused by outdated handling of the slashes in phpList main, not the Rest API. It needs attention.