RAP/RCP single sourcing
Added date by week formater
adding week formatting into datetime object

Conflicts:
	releng/org.eclipse.nebula.nebula-parent/pom.xml
	releng/org.eclipse.nebula.nebula-release/pom.xml
changes for using datechooser in singlesourced RCP/RAP
update form paperclips classpath
tycho 0.18

tycho 0.18
fix duplicated profile
RAP/RCP single sourcing
Rely on newly SWT.ARROW support since RAP 1.5M7
rename widget -> widgets
changes for tablecombo, dtweek, datechooser singlesource
tycho version, gitignore