feat(functional-testing): Separate ngSeed tests from App tests.

Within the test/e2e/seed folder will live all the ngSeed tests.
As we expect to have a lot of tests here that do not require extra
maintenance during an application development, this can be 'turned off'
from the runner.html file.

In the test/e2e/app folder will live all the application tests.
This should never be 'turned off'.

chore(tunnel): Added also two different tunnel scripts for both karma
and the functional test runner but the latter is not working yet.

fix(setup): Download and move BrowserStackTunnel.jar

chore(package): Clean up unused dependencies.

chore(readme): Update readme with nice video of functional test run.