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.

Removed TreeAnnotationItem because usage of TreeItem is sufficient.

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 with ui were added.

JBoss Tools Component: webservices
Author: rrabara