Fix bugs of CSS3 mediaqueries' test cases

A meaningless or invalid value should be treated as default.

Signed-off-by: xiaojunwu <xiaojunx.a.wu@intel.com>
Fix bugs - CSS media query

 - Remove MediaQueries.js
 - Update the tests for meaningless values
 - Update the tests for invalid values
 - Change asnyc_test() to test() and etc

Signed-off-by: xiaojunwu <xiaojunx.a.wu@intel.com>
Merge pull request #888 from xiaojunwu/xiaojunwu/mediaquery-fix-bugs

Fix bugs of CSS3 mediaqueries' test cases