deps: requirements exclude CherryPy >= 3.5

Latest release of CherryPy (3.5.0) causes and error when launching
development server: `ImportError('No module named wsgiserver2',)`
deps+: requirements add mod-python-wsgi (from GitHub)
don't munge body class when saving in Editor
fix Editor preview when archon code not in JSON
disable gzipping in Editor Apache2 config
align is normalize workflows for db_ead and db_hubedit