[IMP] res_config: Update file names, xmlids, class names according to guidelines

Now that we only have one model (res.config.settings). Uniformize everything according to the guidelines.

__manifest__.py

@@ -9,7 +9,7 @@
     'depends': ['website_sale', 'sale_coupon'],
     'data': [
         'views/website_sale_templates.xml',
-        'views/website_config_settings_views.xml',
+        'views/res_config_settings_views.xml',
         'views/sale_coupon_program_views.xml',
     ],
     'auto_install': True,

views/res_config_settings_views.xml

@@ -1,10 +1,10 @@
 <?xml version="1.0" encoding="utf-8"?>
 <odoo>
 
-    <record id="website_config_settings_view_form_inherit_website_sale" model="ir.ui.view">
-        <field name="name">website.config.settings.form.inherit.sale</field>
+    <record id="res_config_settings_view_form" model="ir.ui.view">
+        <field name="name">res.config.settings.view.form.inherit.website.sale.coupon</field>
         <field name="model">res.config.settings</field>
-        <field name="inherit_id" ref="website.website_config_settings_view_form"/>
+        <field name="inherit_id" ref="website.res_config_settings_view_form"/>
         <field name="arch" type="xml">
             <xpath expr="//div[@id='sale_coupon']" position="replace">
                 <div class="mt16" attrs="{'invisible': [('module_sale_coupon', '=', False)]}">