metamer: AbstractWebDriverTest: methods for asserting visibility and presence, refactored JavaScript executing methods, removed unused methods and variables
page fragments: some utilities added
page fragments: textInputComponent: added method fro triggering JS events, reorganized
page fragments: inputNumberSlider component
metamer: inputNumberSlider: simple page updated with JS API
metamer: inputNumberSlider: tests refactored to selenium 2
Metamer: updated testng-selenium2.xml