standardize MonthView, Calendar and RangeCalendar
standardize MonthView,Calendar,RangeCalendar based on esui-flat-theme
add disabled state
modify MonthView Control
delete test img fold
Adjust some RichCalendar styles
Merge pull request #372 from zxhfighter/mywork

standardize MonthView, Calendar and RangeCalendar
remove est.less refrence