input(xmlui): added attributes argument to create: specific attributes can be used of named widget (for some widget converted to <input> only so far). The argument is a dict from widget name to a sub dict containing the keyword arguments. The next dict_ext filter is used.

{% if not embedded %}{% extends 'base/base.html' %}{% endif %}
{% set dates_format='relative' %}
{% import 'blog/macros.html' as blog with context %}

{% block body %}
<div id="blog_items">
    {{ blog.show_items(items) }}
</div>
{% endblock body %}