[BUG #8605] fixed tests
[BUG #8605] removed check for browser-specific error message
[BUG #8605] fixed test for IE
[BUG #8607] fixes for IE
[BUG #8605] fixed test
use global sinon if available
[BUG #8613] quick fix for tests
[BUG #8605] skip test if CSS border images are not supported
[BUG #8605] minor
[BUG #8605] removed obsolete test
[BUG #8605] added DOCTYPE