code: public JQMButton setRightButton(String text, JQMPage page) {
          return setRightButton(text, page, null);
      }
docs: Creates a new {@link JQMButton} with the given text and linking to the
  given {@link JQMPage} and then sets that button in the right slot. Any
  existing right button will be replaced.
  
  @param text
  the text for the button
  @param page
  the optional page for the button to link to, if null then
  this button does not navigate by default
  
  @return the created button