added icons to operator panels and several views

org.fortiss.tooling.kernel.ui/trunk/icons/debug.gif

org.fortiss.tooling.kernel.ui/trunk/icons/error.gif

org.fortiss.tooling.kernel.ui/trunk/icons/fatal.gif

org.fortiss.tooling.kernel.ui/trunk/icons/info.gif

org.fortiss.tooling.kernel.ui/trunk/icons/marker_view.gif

org.fortiss.tooling.kernel.ui/trunk/icons/navigator.gif

org.fortiss.tooling.kernel.ui/trunk/icons/warning.gif

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

...tiss/tooling/kernel/ui/internal/views/MarkerViewPart.java