ZKCAL-34: First day of view is forced to "today" if days is not 7
http://tracker.zkoss.org/browse/ZKCAL-34

git-svn-id: http://zkcalendar.googlecode.com/svn/trunk@157 8cb44ea2-eec7-11de-a004-2f18c49ebcc3
add test case

git-svn-id: http://zkcalendar.googlecode.com/svn/trunk@158 8cb44ea2-eec7-11de-a004-2f18c49ebcc3