[imp] quota display / mailbox management

[liamr@umich.edu]

We're looking to create a status screen that would show the user their 
folder list, sorted by size and with text indicating the size of the 
folder.

Each folder name would then be a link that displayed the mailbox 
screen, with the sort order changed to "sort by size, descending".

The folder screen would probably be something developed outside of 
horde, but we were wondering if it would be possible to create a link 
in an external application to acess a folder via mailbox.php, setting 
it's sort order, but *not* change the default sort order for that user.

I see I can do something like...

https://webmail.example.com/horde/imp/mailbox.php?no_newmail_popup=1&mailbox=sent-mail&sortby=6

but then when I access any other folder, my default sort order has been 
changed.

Liam