[imp] Message flags missing in basic/mobile mode

[Aria Bamdad]

Quoting Michael M Slusarz <slusarz at curecanti.org>:

> The only way IMP hides this is if you are using POP3 or the mailbox  
> is read only.
>
> michael
>

Did a bit more debugging and added the following debug statement to  
the imp/mailbox.php file after the mailbox readonly status is checked:

/* Determine if mailbox is readonly. */
$readonly = IMP::mailbox()->readonly;

Horde::debug($readonly);

and got this in the debug log file:

2012-12-19T13:06:09-05:00 DEBUG: Variable information:
bool(false)

So it looks like at least at this point, the mailbox is not in  
readonly mode as I expected.  This also explains why the flags work in  
dynamic mode and in basic mode using an older version of IMP.  Will  
keep looking.