AcceptanceTests_talkback.js

Description:

This will run the acceptance tests for Talkback screen reader.
It tests the system using four preference sets:
 (1) talkback1: application specific talkback settings
 (2) talkback2: screen reader common terms
 (3) screenreader_common: screen reader common terms
 (4) screenreader_orca: application specific orca settings
 (5) screenreader_nvda: application specific nvda settings