[imp] over-quota deletions

[Kevin Konowalec]

I'm not sure if this is possible, but I think it'd be really helpful  
if some code were added to the delete feature that would check the  
quota of the user first.  As it stands now if you have your system  
set up to move your deleted messages into a trash folder (as we do)  
then if a user is over quota he will not be able to delete anything  
because the trash folder counts towards your overall disk quota.   
Perhaps if Imp checked the quota status when it attempted to delete a  
message then if the user is not over quota the message is simply  
moved as expected... if they ARE over quota it would delete the  
messages in place (after a popup "are you sure???" box).