macros (field, form, textbox): general improvments: - use a generic "field" macro for most fields - added "required" class on input labels if suitable - extra kw args are used as input field attributes. Same thing for forms - better handling of id if label is missing - added blog_text macro in textbox for basic text blog input - textbox is more customisable (class and textarea class can be specified)

{% macro form(action='', class='') %}
<form method="post" action="{{action}}" {{ {'class': class}|xmlattr }} {{kwargs|xmlattr}} >
    {% if csrf_token is defined %}
        <input type="hidden" name="csrf_token" value="{{csrf_token}}">
    {% endif %}
    {{ caller() }}
</form>
{% endmacro %}