[REM] rating_project: kill the module and move feature in project

Impacted modules: project, rating_project,
sale_service_rating and website_rating_project.

Removed modules: rating_project and sale_service_rating.

Move code to empty 'rating_project' module, in order
to kill it.
Code is not modified, simply copy/paste at the right
place in 'project' module code.

However, 'enable rating on task' options is convert
into a res.groups that can be activated from the
project settings.

addons/project/security/project_security.xml

@@ -24,6 +24,11 @@
         <field name="category_id" ref="base.module_category_hidden"/>
     </record>
 
+    <record id="group_project_rating" model="res.groups">
+        <field name="name">Use Rating on Project</field>
+        <field name="category_id" ref="base.module_category_hidden"/>
+    </record>
+
 <data noupdate="1">
     <record id="base.default_user" model="res.users">
         <field name="groups_id" eval="[(4,ref('project.group_project_manager'))]"/>