A '\' (backslash) character breaks livetable display

If there is a '\' (backslash) character in a mail subject for example, the livetable display (MailArchive.WebHome) is broken and nothing shows.
In fact JSON gets corrupted because '\' is replaced with '
' whitch is replaced by a line-break.
Apart from that, default XWiki.LiveTableResultsMacros had several changes, so it should be impacted in MailArchiveCode.LiveTableResultsMacros first as it may fix the problem.