customer editor, contact editor - nearly finished!
missing files for last commit :)
Merge branch 'eclipse4' of https://github.com/pascalalich/rcp-contacts-sample into eclipse4

Conflicts:
	com.zuehlke.contacts4.ui/META-INF/MANIFEST.MF
	com.zuehlke.contacts4.ui/fragment.e4xmi
	com.zuehlke.contacts4.ui/src/com/zuehlke/contacts4/internal/ui/handlers/EditorHandler.java