Added primitive Collada support to Qt viewer.
Added primitive Collada support to Qt viewer.

daviddeng/azrael,olitheolix/azrael,daviddeng/azrael,daviddeng/azrael,daviddeng/azrael,olitheolix/azrael,olitheolix/azrael,olitheolix/azrael,olitheolix/azrael,daviddeng/azrael