A couple of sweet white-box sim enhancements

I added a couple of enhancements that have been in development for a while. This is about using flow-ports to build a white block simulation. There's also a helper to create part/Block at same time (essentially removing manual steps to make things quicker when building a white box simulation). I would normally hold off during new features but I wanted these in ahead of an IBM webinar...

#213 09-JUL-2017: Add dialogs to auto-connect «publish»/«subscribe» FlowPorts for white-box simulation (F.J.Chadburn)
#214 09-JUL-2017: Tweak Link from TimeActor to be a new term "connector" when creating block hierarchy (F.J.Chadburn)
#215 09-JUL-2017: Change GlobalPreferencesProfile so that Link name is not shown on IBDs by default (F.J.Chadburn)
#216 09-JUL-2017: Added a new Add Block/Part command added to the Functional Analysis menus (F.J.Chadburn)
#217 09-JUL-2017: Refined the menus to say Create an attribute/flow-port/check operation (F.J.Chadburn)