set up to allow multiple server names, described here http://blog.rootsmith.ca/uncategorized/request-server-or-hostname-must-match-flasks-server_name-to-route-successfully/
clean up homepage
update codemirror submodule
do not escape html in title
Upgrade to latest docker.

- Dockerfile updated to use reasonably maintained ubuntu.

- remote API does not have a (URL) insert method anymore, so use volume
  mounting instead, which is a likely performance bonus anyways.
Merge branch 'master' into docker

Conflicts:
	pub/static/lib/CodeMirror