separate index.html for dev and prod
Merge commit '55866d446c3400546e14cdb11def504d836518aa' into gh-pages

* commit '55866d446c3400546e14cdb11def504d836518aa':
  separate index.html for dev and prod

Conflicts:
	project.clj
	src/clj/user.clj
	src/cljs-dev/joulukalenteri/dev.cljs