Fix PortTable combo box so that we use descriptors and not the _module_key_map.  Also change to display package info in combo box.
Fix PortTable combo box so that we use descriptors and not the
_module_key_map.  Also change to display package info in combo box.

core/modules/tuple_configuration.py:
  - PortTable.initializePorts: add package name to display
  - PortTableItemDelegate: add package name to combo item
  - PortTableConfigurationWidget.sizeHint: horizontal res -> 512



VisTrails/VisTrails,celiafish/VisTrails,minesense/VisTrails,VisTrails/VisTrails,Nikea/VisTrails,celiafish/VisTrails,minesense/VisTrails,hjanime/VisTrails,hjanime/VisTrails,hjanime/VisTrails,VisTrails/VisTrails,Nikea/VisTrails,VisTrails/VisTrails,hjanime/VisTrails,VisTrails/VisTrails,Nikea/VisTrails,hjanime/VisTrails,celiafish/VisTrails,celiafish/VisTrails,minesense/VisTrails,Nikea/VisTrails,minesense/VisTrails,minesense/VisTrails