viv: dump QWebView-derived MemCanvas classes to HTML files (Memory View

and FuncGraph View and Symboliks View).  Sadly, we can't currently
easily do this for the CallGraph or Tree Views (eg. Functions, Workspace
Names).  perhaps the TreeViews will be added later.  not sure about
CallGraph, it's a different animal altogether.
it's an option, and something to cause this conversation to happen :)  the 50x50 is a limiter to keep the option from being added to the menu only in the upper left corner of the frame.  i'm open to other things, but i figure this feature doesn't need to be in every context menu.  have any better options?  currently, i don't know of a good way to tell if we're in or out of a box when we rt-click.  or if you don't care and just want it in the context menu, i pull out the 50x50 check and we're done :)