Root directory now shows directory listing if no index.html available.
Root directory now shows directory listing if no index.html available.

Closes #179.

mathstuf/tangelo,Kitware/tangelo,Kitware/tangelo,ecohealthalliance/tangelo,mathstuf/tangelo,mathstuf/tangelo,Kitware/tangelo,ecohealthalliance/tangelo,ecohealthalliance/tangelo