Webservices: reworked dialog and view to use Red Deer instead of SWTBot

WSTesterParametersDialog and AnnotationPropertiesView were reworked to use
Red Deer instead of SWTBot or SWTBotExt.

Created RedDeerHelper solving issue 557 in Red Deer

ws.reddeer plugin's package structure was changed.
org.jboss.tools.ws.ui was renamed to org.jboss.tools.ws.ui.preferences
and new packages were added.