Don't include moc files in namespaces
Don't include moc files in namespaces

This causes compilation issues with GCC 9.1.0 on a new install. Also
prefer calling .begin()/.end() over std::begin and end - this caused
compilation issues and uses more characters/looks less obvious to me.

Signed-off-by: Marcus D. Hanwell <cf7042e2e8eee958b5bcde1ae2cbefef82efc184@kitware.com>

OpenChemistry/tomviz,OpenChemistry/tomviz,OpenChemistry/tomviz,OpenChemistry/tomviz