[imp] Blank emails not resetting 'new email' flag

[Myke Place]

Hello,

A user of ours reported a possible bug. I didn't see it discussed on the
list, so I thought it might be prudent to bring it up here. My sincere
apologies if this has been reported before and I missed it.

When an email is sent without any content in the body of the message, 
after clicking on the message to view it and then clicking on the Inbox 
icon to return to the Inbox, the message is not marked as read. The only 
way to mark the message read is to either log out and log back in, or to 
select 'Mark as Read' from the dropdown menu. 

Version info follows:

    * Horde: 2.2.1
    * IMP: 3.2.1
    * Turba: 1.2
    * Kronolith: 1.1
    * Mnemo: 1.0
    * Forwards: 2.0.1-cvs
    * Vacation: 2.2
    * Mimp: 0.0.1-cvs

As always, let me know if there is additional info that I can provide. 

-mp