Revert "removed optional dependencies causing dependency cycle"

This reverts commit abbec319b4e330f5fdf8495f488df745bba95673.
Revert "fix reference to org.eclipse.riena.navigation.ui.swt.rcp.fragment in map file"

This reverts commit bd3e877d5a47147c2a66e80ed4826693eef1acc8.
Revert "fragment to get navigation.ui.swt.rcp automatically included to eclipse launch configuration"

This reverts commit 0b7cc4f5457ad7f4e2a47457feb9b45d7e783512.