on a page can be alerted when the published status of the page
changes. Invoice->WriteData format was incorrect for only one
group. Post module now displays it's own posts when the Reader
module is not on the page. This allows it to respond to status
changes for the page, whereas Reader module can only aggregate
public feeds. Added a warning to the Purchase module for when
the day is not "co-op-day" and ordering is not being used.
The timezone is now set in the Config module's constructor.