Added a testArea that is outside the viewport but still considered as
visible from the jQuery code.
The testArea is useful when:
- tested code tries to access DOM elements using global ids
- tested code is requiring some UI elements to be visible to activate
themselves
- added karma utility to run jasmine unit tests
- added Sinon library (for stubs/mocks/fakeserver)
- added a few unit tests for core and files
- added autotest-js.sh script