Should support xhtml deactivation in MUCs
Please add an option to disable xhtml in MUCs only, or some sort of selective xhtml setting.
Rationale: I've got an email notification bot for which I have xhtml turned on (to read mails directly in Gajim, with the headers and the message formatted). But I am also in MUCs with people whose clients send some weird formatting with the message (font and font size). So an option to ignore those stylesheets would be nice.