Added get_template_or_404 helper to solve #1221
Added get_template_or_404 helper to solve #1221

enkiv2/popcorn_maker,mozilla/popcorn_maker,sgml/popcorn_maker,enkiv2/popcorn_maker,sgml/popcorn_maker,mozilla/popcorn_maker,mozilla/popcorn_maker,sgml/popcorn_maker,sgml/popcorn_maker,enkiv2/popcorn_maker,mozilla/popcorn_maker,enkiv2/popcorn_maker