It seems as if I was never actually allowed to license this as GPL
from the start because the example HTML layouts I based this theme
on are part of the Bootstrap documentation, which are CC-BY-3.0.
See: https://v4-alpha.getbootstrap.com/examples/
* Add Vim modeline comments to all relevent template files.
* Add Vim modeline comments to a few other files.
* Move modeline comments inside the template definitions in list and single.
For some odd reason, putting them outside breaks the page generation.
* Use template comments for modeline comments in templates.
* Fix form 2 modelines.