I want to override the website template to be able to use my own favicon on website in Odoo 9.

I have created a custom module website_favicon with the following structure:

__init__.py (empty)

__openerp__.py

views

    - website_templates.xml 

static 

    -  src

        - img 

            favicon.ico 

In  __openerp__.py I put {
    'name': "Website Favicon",
    'version': '1.0.0',
    'author': 'Me',
    'category': 'Custom',
    'description': '''Website Favicon''',
    'depends': ['website'],
    'data': [
        'views/website_templates.xml',
        ],
    'installable': True
}

In website_templates.xml I put

<?xml version="1.0" encoding="utf-8"?>
<openerp>
 <data>
  <template id="website_favicon" inherit_id="website.layout" name="Website Favicon">
         <xpath expr="//meta[@name='keywords']" position="after">
          <link rel="shortcut icon" href="/website_favicon/static/src/img/favicon.ico" type="image/x-icon"/>
         </xpath>
     </template>
 </data>
</openerp>

The module installed successfully and I see the <link.../> code being inserted in the page source, but I don't see the new favicon on my website. Could you advice?