todoyu selenium testsuite steps: calendar extension
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* planning area
	use main tab, go to area, main tab activated?
	calendar sub tabs accessible? (day, week, month)
* calendar panelwidget
	alle elements present?
	toggle expand/collapse incl. pref
* staffselector panelwidget
	alle elements present?
	toggle expand/collapse incl. pref
* eventtypeselector panelwidget
	alle elements present?
	toggle expand/collapse incl. pref
* holidaysetselector panelwidget
	alle elements present?
	toggle expand/collapse incl. pref	