GPII-571: Adding AcceptanceTests_include.js
GPII-571: Splitting up orca-related acceptance tests

Adding tests for screenreader_common, screenreader_nvda and
screenreader_orca and deleting them from old AcceptanceTests.js.
GPII-571: Splitting up linux builtin-related acceptance tests

Adding tests for os_common, os_win7 and os_gnome and deleting them from
old AcceptanceTests.js.
GPII-571: Removing remaining stuff from old AcceptanceTests
Merge pull request #44 from javihernandez/GPII-571

GPII-571: Update the linux acceptance tests to point to the correct location