[REF] mrp_repair: replace workflow by python code

addons/mrp_repair/__openerp__.py

addons/mrp_repair/data/mrp_repair_data_workflow.xml

addons/mrp_repair/models/mrp_repair.py

addons/mrp_repair/tests/test_mrp_repair.py

addons/mrp_repair/views/mrp_repair_views.xml

addons/mrp_repair/wizard/mrp_repair_make_invoice.py