azavea/OTM2 — pull request #760 by maurizi (2013-10-18 20:04:26+00:00)
Title: Revert only showing elements with content in them, Fixes #757

43c12d237e attempted to only show elements when there was content in them,
which broke the UI in several other interesting ways.

Instead we will handle this in CSS with :empty, which is why all error
elements have carefully had spaces removed from them.