Remove modules that will be merged in ***_usability modules or that are not useful in v10

Rename some modules

purchase_usability/purchase.py

@@ -0,0 +1,74 @@
+# -*- encoding: utf-8 -*-
+##############################################################################
+#
+#    Purchase Usability Extension module for Odoo
+#    Copyright (C) 2015 Akretion (http://www.akretion.com)
+#    @author Alexis de Lattre <alexis.delattre@akretion.com>
+#
+#    This program is free software: you can redistribute it and/or modify
+#    it under the terms of the GNU Affero General Public License as
+#    published by the Free Software Foundation, either version 3 of the
+#    License, or (at your option) any later version.
+#
+#    This program is distributed in the hope that it will be useful,
+#    but WITHOUT ANY WARRANTY; without even the implied warranty of
+#    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+#    GNU Affero General Public License for more details.
+#
+#    You should have received a copy of the GNU Affero General Public License
+#    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+#
+##############################################################################
+
+from openerp import models, fields, api
+
+
+class PurchaseOrderLine(models.Model):
+    _inherit = 'purchase.order.line'
+    _order = 'order_id, sequence, id'
+
+    sequence = fields.Integer(string='Sequence', default=10)
+
+
+class PurchaseOrder(models.Model):
+    _inherit = 'purchase.order'
+
+    state = fields.Selection(track_visibility='onchange')
+    location_id = fields.Many2one(track_visibility='onchange')
+    picking_type_id = fields.Many2one(track_visibility='onchange')
+    dest_address_id = fields.Many2one(track_visibility='onchange')
+    pricelist_id = fields.Many2one(track_visibility='onchange')
+    date_approve = fields.Date(track_visibility='onchange')
+    validator = fields.Many2one(track_visibility='onchange')
+    invoice_method = fields.Selection(track_visibility='onchange')
+    payment_term_id = fields.Many2one(track_visibility='onchange')
+    fiscal_position = fields.Many2one(track_visibility='onchange')
+    incoterm_id = fields.Many2one(track_visibility='onchange')
+    partner_ref = fields.Char(track_visibility='onchange')
+
+
+class ResPartner(models.Model):
+    _inherit = 'res.partner'
+
+    @api.one
+    def _purchase_stats(self):
+        poo = self.env['purchase.order']
+        aio = self.env['account.invoice']
+        try:
+            self.purchase_order_count = poo.search_count(
+                [('partner_id', 'child_of', self.id)])
+        except:
+            pass
+        try:
+            self.supplier_invoice_count = aio.search_count([
+                ('partner_id', 'child_of', self.id),
+                ('type', '=', 'in_invoice')])
+        except:
+            pass
+
+    # Fix an access right issue when accessing partner form without being
+    # a member of the purchase/User group
+    purchase_order_count = fields.Integer(
+        compute='_purchase_stats', string='# of Purchase Order')
+    supplier_invoice_count = fields.Integer(
+        compute='_purchase_stats', string='# Supplier Invoices')