Fixing bugs in deploy files

All deploys went to production *and* the named stage, if one was named.
Adding a 'fullwidth' boolean to interactives

[#43056247] First step: Allow authors to designate a full-width interactive
Templates to show full-width interactives

[#43056247] This is a minimal change to the views, with the embeddables self-arranging in a two-wide grid below. There's something funky with the spacing of the embeddables, perhaps in the margins.