backup 04/21
modify counting algorithm
back up before Internationalization
finish internationalization of Calendar View
finish Internationalization of New Plan View
finish Internalization of all text
backup 04/23
finish Internationalization of Japanese Text
backup before add Japanese Voice
commit Internationalization
backup after 04/23
Backup 04/29
finish deleting plans
fix a bug that occurs when generate content at the last day of a month
final