test\harness\helper.js: extended the 'finished' method to accept as input the...

test\harness\helper.js:  extended the 'finished' method to accept as input the total elapsed execution time
                         of the tests.  Emit this to the activity bar


test\harness\sta.js:  too many years of Python had me thinking JavaScript arrays have an append method:)  Fixed.
                      Also, added a pickled representation of all test helper functions found in this file


test\harness\sth.js:  detached most test helper functions from the iframe's document object (as globals) and
                      inject these into the actual test cases. It's a bit slower and not as elegant, but it is
                      cleaner from an ES5 purist perspective.  Still need to move Sputnik helper functions into
                      sta.js

                      Extended Controller such that it now measures overall test execution time.  Such a change
                      is very useful for measuring performance-impact changes such as the aforementioned
                      improvement