new module purchase_department, with tree view
add department to po form view
add department in po search view
department in purchase order line
new module purchase_requisition_department
tender form view
add requisition search view
no department on tender lines: there are no views
propagate department from tender to bid
propagate empty department to invoice
actually propagate department id to the invoice
lint
improve readme
travis: clone purchase-workflow
framework_agreement_department

This module is just like the others here: adds a notion of department to
agreements.
travis: pull server-tools
remove unused import
move copyright notice to all python files
Merge pull request #27 from lepistone/purchase-department

new purchase department modules