=====Work to be done to prepare webERP for a version 4.0 release=====

~- Make the report writer work with TCPDF
~- Re-write the logic for entry of purchase orders using the purchasing data conversion factor. Ensure only our(the business's) units are stored in the database
~- Re-write the logic for receiving of purchase orders using the conversion factor
~- Check all scripts that use purchorderdetails that conversionfactor is not used in determining quantities on order
~- Check all scripts that use purchorderdetails that only the quantities of authorised and printed purchase orders are shown.
~- Check every script is in the scripts table with appropriate PageSecurity value
~- Check every script has PageSecurity commented out - as this is now retrieved from the scripts table in the database