[FIX] website: force web.layout inheriting later

Before this commit, if you installed website in community you was not able to
install web_enterprise, because the web.login_layout was replaced (by hinerit)
by website and break the xpath from enterprise login.

Now we apply the Enterprise login xpath before that website replace it.

addons/website/views/website_templates.xml

@@ -315,7 +315,7 @@
 </record>
 
 <!-- Features template -->
-<template id="login_layout" inherit_id="web.login_layout" name="Website Login Layout">
+<template id="login_layout" inherit_id="web.login_layout" name="Website Login Layout" priority="20">
     <xpath expr="t" position="replace">
         <t t-call="website.layout">
             <div class="oe_website_login_container" t-raw="0"/>