CSS 3 Selectors tests

Original CSS work by Daniel Glazman (c) Disruptive Innovations 2008

Testing code written by Diego Perini. It should help improve the consistency with querySelectorAll results and match browsers internal CSS selectors behavior. Selection method calls are wrapped in a try/catch block for all libs to avoid possible errors preventing the tests to complete. Moving the mouse over the red/lime blocks will show the tooltips with info on the tests.