{#
Inserts a stepped progress indicator for the new package form. Each stage can
have one of three states, "uncomplete", "complete" and "active".

stages - A list of states for each of the three stages. Missing stages default
         to "uncomplete".

Example:

    {% snippet 'package/snippets/stages.html', stages=['active'] %}
    {% snippet 'package/snippets/stages.html', stages=['complete', 'active'] %}
    {% snippet 'package/snippets/stages.html', stages=['active', 'complete'] %}

#}
{% set s1 = stage