fix #746 Removed usage of map function to fix SkinClassFallbackTestCase for IE 7/8

Close #798
v1.4.12
fix #801 Wrong validation on the textinput widget

If a textinput widget, with directOnBlurValidation set to false, has an error state, focusing and bluring the field removed the error state, which is wrong as no changes occurred
fix #806 Add some missing z-index on the splitter handles