basic set of tests for shape-outside + shape-box
Remove tests of css3-flexbox in work-in-progress

- These tests have been moved to css-flexbox-1
Merge pull request #562 from yunxiaoxie/yunxiaoxie/css3-flexbox

Remove tests of css3-flexbox in work-in-progress
removed tests 001 & 005. since shape-outside: margin-box on a plain div float has the same effect as if no shape-outside property was set, it's not testable.  margin-box tests are covered elsewhere with polygons, circles, and images.
Merge pull request #547 from rhauck/shape-box-tests

basic set of tests for shape-outside + shape-box