Added a new price field to the 'product' model
Acknowledgemen Item now is always set to the 'price' of the product initially
Acknowledgement discount is set from Customer discount
Added a 'discount' field to the contact model
Sets price when creating the product
Rewrote tests for contacts and products to account for discount and single price system
unable adding new supplier
Fixed logging for acknowledgement and supplies costs permissions
Fixed supply cost permissions
Added Supplier contact section to the pdf and system
Added custom types for supplies
Removed old invalid tests
Test compliant
Add project line to the purchase order
Add project attribute to the po model
Made the supplier address unicode
Enabled superscript for po item units
Fixed pdf not available when getting single resource
Change how po api checks for pdf
Fix updating contacts loggin messages