fix #713 Slider widgets improvement (touch library)

Close #715.
feat #747 Added and refactored easing functions for animations
fix #740 touch button test case on ie7
fix #720 More positioning options for the Touch:Dialog widget

Close #733
Fix #730 Validation errors in page engine instances when navigating between pages with submodules
fix #672 DefaultAppender error display on Chrome

Changed error method of aria.core.log.DefaultAppender to explicitly log
the name and message of the original js error, if provided.

Close #673