fix bootstrap regression (module docs weren't being published)
fix bootstrap regression (module docs weren't being published)

reverts the "skip docs on first module build" part of
c4fc2fd42457a87fea9e7af94e0ba2f57e533854 since it was resulting in
module docs never being published at all, which then would later
cause release-website-archives to fail. see
https://github.com/scala/scala-dev/issues/89

felixmulder/scala,martijnhoekstra/scala,felixmulder/scala,felixmulder/scala,felixmulder/scala,lrytz/scala,scala/scala,slothspot/scala,lrytz/scala,martijnhoekstra/scala,jvican/scala,lrytz/scala,felixmulder/scala,jvican/scala,slothspot/scala,shimib/scala,lrytz/scala,scala/scala,jvican/scala,lrytz/scala,jvican/scala,lrytz/scala,jvican/scala,slothspot/scala,martijnhoekstra/scala,felixmulder/scala,felixmulder/scala,scala/scala,shimib/scala,martijnhoekstra/scala,scala/scala,shimib/scala,scala/scala,slothspot/scala,martijnhoekstra/scala,slothspot/scala,shimib/scala,slothspot/scala,jvican/scala,jvican/scala,slothspot/scala,shimib/scala,martijnhoekstra/scala,scala/scala,shimib/scala