checkpoint: imported the common view code and converted to new conneg standard
checkpoint: can compile the common view unit tests again
checkpoint: fixed most of the broken core view unit tests
checkpoint:  fixed the OutputNodeExtensions tests
finished importing the core view code into FubuMVC
moved IViewFacility to its new signature
pulled ViewAttachmentWorker out of the soon to be obsolete ViewAttachmentPolicy
moving the view finding incrementally closer to the parallelization we want
view discovery and attachment is parallelized with action discovery and imports.  Closes GH-659