Display issues for the aria tester on IE10

Replacing:
  ``aria.core.Browser.isIE9``
by
  ``aria.core.Browser.isIE && aria.core.Browser.version >=9``
and
  ``aria.core.Browser.isIE && !aria.core.Browser.isIE9``
by
  ``aria.core.Browser.isIE && aria.core.Browser.version < 9``
in CSS templates of the aria tester.