Underscores as raw characters are escaped

[Hamms]

A source string such as "Top ____ Tips for Conducting a Great Interview" in CB will get output to just that same string, but when going through the redaction process the underscores will be escaped to prevent them from being parsed as control characters, resulting in redacted string "Top \_\_\_\_ Tips for Conducting a Great Interview".

Although both of these result in the same HTML output, the inconsistency is worrying. At the very least, it would be nice to prove out that this change cannot have any significant impact on the output, and at best it should be sanitized.