Regions and resizing tests; prefixed. Will unprefix in separate commit
unprefixed support files
addressed feedback from @maerean and @mihneaOMV about regions & resizing tests
Commented code as per @maerean's request
renamed utility function as per @maerean's comment
Merge pull request #107 from mibalan/resizing

[css3-regions] JavaScript driven ref-tests for CSS Regions and resizing