Merged CriterionSelector bean of Plato, KBrowser in planning-core for #125
Changed kBrowser skin to DEFAULT
Updated criterionselector and criterion tree in kbrowser fixes #125

* criterionSelector in plato and kbrowser is now a identical copy
* Changed Plato criterion selector to use JSF component
* Selecting a category or attribute in criterionselector now clears the search term
Added missing styleClass attribute to inputfield fixes #153