added graphical shape preferences

org.fortiss.tooling.base.ui/trunk/META-INF/MANIFEST.MF

org.fortiss.tooling.base.ui/trunk/build.properties

org.fortiss.tooling.base.ui/trunk/plugin.xml

.../tooling/kernel/base/ui/editpart/figure/EVisualStyle.java

...ng/kernel/base/ui/editpart/figure/PrettyInsetEllipse.java

...ernel/base/ui/editpart/figure/PrettyRoundedRectangle.java

...el/base/ui/preferences/GraphicalViewerPreferencePage.java

...ooling/kernel/base/ui/preferences/MainPreferencePage.java