[CB-2914][CB-2975][CB-2988] stubs for currently unimplemented scripts
[CB-3589] updated cordova js and VERSION, tagging 2.8.0
[CB-3589] 2.8.0 version tagging for BBOS and playbook
[CB-3518] Fix BB10 unit test runner for node > 0.9.9

- update jasmine-node to 1.7.1
- make necessary changes to tests
- some test failures outstanding which need to be investigated

Reviewed by Jeffrey Heifetz <jheifetz@blackberry.com>
Tested by Bryan Higgins <bhiggins@blackberry.com>