Updated the deployment

Fixed the problem with the script path as not available in PowerShell 2.
Updated list creation to update the field for SharePoint 2010. Also add
a default to fields for the boolean Processed field. Removed an
unexpected hyphen.
Added the DeployFeature script.
Updated the wsp as it wasn't pointing to the correct list and updated
the item event receiver to ensure it only fires once.
Added a script for updating the webpart property to use the xslt file
that is deployed.
Stopping Update firing from ItemAdded

Disabling the update method from firing the correct way in the event
item receiver.