Use Y.DateAssert in Calendar Tests
Update Calendar tests to check issue #2532163 #2532183 #2532185
Improve minimum/maximumDate Calendar feature. fix #2532163 #2532183 #2532185

Setting minimumDate or maximumDate now correctly disable nodes before
or after theses dates.
Update calendar documentation for the min/maxDate attributes
Fix Calendar navigator when min/max date change. #2532183
Merge branch 'fix-minmax-date' of git://github.com/ArnaudD/yui3 into ArnaudD-fix-minmax-date
Update Calendar history.
Build calendar.