Prefixes the css classes in use by the Simplicity Widgets.

https://github.com/t11e/simplicity/issues/31
Renames the css class ui-simplicity-selected to
ui-simplicity-fancy-select-selected.
Removes unnecessary styles from simplicitySlider.css.
Removes double div.ui-simplicity-pagination from
$.ui.simplicityPagination and simplicityPagination.css.
Adds 'ui-simplicity-pagination-' prefix to all of it's css classes.

https://github.com/t11e/simplicity/issues/38
Additional fixes for the ui-simplicity-fancy-select-* css classes.
Fixes the $.ui.simplicitySelectSlider styles to correctly deal with
hiding the first and last tick without swallowing it's label.
Fixes the ui-simplicity-fancy-select-radio usage.
Fixes broken flyout styles on the facetdriven example page.
Adds the ui-helper-clearfix class to the simplicityPagination widget by default.