[MOV] sale: re-organise directory structure according to new API guidelines

addons/sale/__init__.py

addons/sale/__openerp__.py

addons/sale/data/ir_sequence_data.xml

addons/sale/data/product_product_demo.xml

addons/sale/data/sale_data.xml

addons/sale/data/sale_demo.xml

addons/sale/data/sale_layout_category_data.xml

addons/sale/data/sale_tour.xml

addons/sale/models/__init__.py

addons/sale/models/res_partner.py

addons/sale/models/sale.py

addons/sale/models/sale_analytic.py

addons/sale/models/sale_config_settings.py

addons/sale/models/sale_layout.py

addons/sale/models/sales_team.py

addons/sale/report/invoice_report_templates.xml

addons/sale/report/sale_report.xml

addons/sale/report/sale_report_templates.xml

addons/sale/report/sale_report_views.xml

addons/sale/sale_demo.yml