static: Bring in new CSS.
templates: Update root for new hotness.
templates: Unify universes and remove Flavor Text-specific stuff.
templates/universe: Unify cast page.
templates: Chop up a bunch of single-use macros.
Commit to a newer Flask-WTF.
requirements: Commit to a newer WTForms.
admin, forms: Move to newer WTForms/Flask-WTF exports.
templates/universe/comics: New hotness.

Bits of this hotness will filter down into other pages eventually.
admin: Fix more WTForms breakage.
Show major characters in the side panel.
List universes in sidebar.
Fix cast page rendering.
templates/universe/comics: Link up cast and universe in sidebar.