Update submodule
Touching up
Adding minified css and js files
Making it all work across various PHP versions

Some clean up
New: filter_combined_int_null_sanitize_x3 test
Added: test names as class to the result cells to easily identify differences in a html source compare
Slim down test array for 'ordinary' use, adding extra test variables only when needed to illustrate something
Static test results for numerous PHP versions