[Dovecot] Dict quota negative values in MySql table?

[michael at lattari.pl]

I have it :-)

The values are negative because they are relative to the messages count
and the used storage at the timepoint of Quota Plugin initialization. 
If I would have had x messages in my INBOX  before quota initialization,
then I would have started the Quota Plugin and I would have deleted y
messages, then I would have had a (x-y) messages count in the MySql
quota table... and the same is valid for storage :-)

Best regards