[FIX] website_theme_install, *: multi-website customization dialog

* theme_bootswatch, theme_default

Before this commit, the customization dialog for themes was not
multi-website. That means if a theme was installed on a website, the
customization dialog was enabled for all the websites.

Note: this commit uses the '_post_copy' system of theme installations
for the first time and it had to be adapted a little bit.

addons/theme_bootswatch/__init__.py

 # -*- encoding: utf-8 -*-
 # Part of Odoo. See LICENSE file for full copyright and licensing details.
+from . import models

addons/theme_bootswatch/data/theme_bootswatch_data.xml

@@ -9,8 +9,4 @@
         <field name="action_id" ref="action_website"/>
         <field name="state">open</field>
     </record>
-
-    <record id="website_theme_install.customize_modal" model="ir.ui.view">
-        <field name="active" eval="False"/>
-    </record>
-</odoo>
\ No newline at end of file
+</odoo>

addons/theme_bootswatch/models/__init__.py

+# -*- encoding: utf-8 -*-
+# Part of Odoo. See LICENSE file for full copyright and licensing details.
+from . import theme_bootswatch

addons/theme_bootswatch/models/theme_bootswatch.py

+from odoo import models
+
+class ThemeBootswatch(models.AbstractModel):
+    _inherit = 'theme.utils'
+
+    def _theme_bootswatch_post_copy(self, mod):
+        self.env.ref('website_theme_install.customize_modal').write({'active': False});

addons/theme_default/__init__.py

 # -*- encoding: utf-8 -*-
 # Part of Odoo. See LICENSE file for full copyright and licensing details.
+from . import models

addons/theme_default/data/theme_default_data.xml

@@ -9,8 +9,4 @@
         <field name="action_id" ref="action_website"/>
         <field name="state">open</field>
     </record>
-
-    <record id="website_theme_install.customize_modal" model="ir.ui.view">
-        <field name="active" eval="False"/>
-    </record>
 </odoo>

addons/theme_default/models/__init__.py

+# -*- encoding: utf-8 -*-
+# Part of Odoo. See LICENSE file for full copyright and licensing details.
+from . import theme_default

addons/theme_default/models/theme_default.py

+from odoo import models
+
+class ThemeDefault(models.AbstractModel):
+    _inherit = 'theme.utils'
+
+    def _theme_default_post_copy(self, mod):
+        self.env.ref('website_theme_install.customize_modal').write({'active': False});

addons/website_theme_install/models/theme_models.py

@@ -63,11 +63,12 @@ class Theme(models.AbstractModel):
     _auto = False
 
     def _post_copy(self, mod):
+        website = self.env['website'].get_current_website()
         theme_post_copy = '_%s_post_copy' % mod.name
         if hasattr(self, theme_post_copy):
             _logger.info('Executing method %s' % theme_post_copy)
-            method = getattr(self, theme_post_copy)
-            return method()
+            method = getattr(self.with_context(website_id=website.id), theme_post_copy)
+            return method(mod)
 
 
 class IrUiView(models.Model):