Don’t ignore img tags in the body when sending a message with /xhtml

It should imo use the same conversion as for display, with the URL and in parenthesis the alt name, or the opposite, something like that.

• Changesets:
  • Revision 7b3265c6 by mathieui on 2014-12-08T22:50:16Z:

Fix #2754 (make /xhtml send a message with receipts, chatstates and display it properly)

(also make the message appear in PrivateTabs)