16: implement initial navigation  Task-Url: http://github.com/webcane/EclipseCommander/issues/issue/16 add e4 core and osgi services for event broker; make lazy
16: implement initial navigation 
Task-Url: http://github.com/webcane/EclipseCommander/issues/issue/16
add e4 core and osgi services for event broker;
make lazy
e4c/EclipseCommander