[12.0][MIG] product_unit_manager_group + rename

Basic module migration and :

- rename module's name product_unit_manager_group into uom_manager_group
in order to follow the new separation between product and uom modules
in Odoo 12.0
- light refactor adding a group category "Units of Measure" with two
levels :
    - nothing : neither UoM fields nor menus are displayed
    - User : UoM fields are displayed but not Uom menus (Users are not
    allowed to create or modify UoM)
    - Manager : display both fields and UoM menus

The rest of the module philosophy is maintained. All the Sales
Manager, Stock Manager, MRP Manager have no more rights to create or
modify UoMs. Only "UoM Managers" can.

uom_manager_group/i18n/fr.po

@@ -0,0 +1,29 @@
+# Translation of Odoo Server.
+# This file contains the translation of the following modules:
+#	* uom_manager_group
+#
+msgid ""
+msgstr ""
+"Project-Id-Version: Odoo Server 8.0\n"
+"Report-Msgid-Bugs-To: \n"
+"POT-Creation-Date: 2017-03-13 15:35+0000\n"
+"PO-Revision-Date: 2017-03-13 15:35+0000\n"
+"Last-Translator: <>\n"
+"Language-Team: \n"
+"MIME-Version: 1.0\n"
+"Content-Type: text/plain; charset=UTF-8\n"
+"Content-Transfer-Encoding: \n"
+"Plural-Forms: \n"
+
+#. module: uom_manager_group
+#: model:res.groups,comment:uom_manager_group.group_uom_manager
+#: model:res.groups,name:uom_manager_group.group_uom_manager
+msgid "Manage Multiple Units of Measure"
+msgstr "Gérer plusieurs unités de mesure"
+
+#. module: uom_manager_group
+#: model:res.groups,comment:product.group_uom
+#: model:res.groups,name:product.group_uom
+msgid "Use Multiple Units of Measure"
+msgstr "Utiliser plusieurs unités de mesure"
+