fix: exception when using the 'import' statement in jinja templates
fix: exception when using the 'import' statement in jinja templates

Not really sure about the underlying cause of this (e.g. I am not
sure how/why jinja treats this differently than an include, but the jist of the
problem was that endpoint_stack was coming up as None instead of
a list.

level12/blazeweb,level12/blazeweb,level12/blazeweb