CVS log for loncom/interface/lonannounce.pm

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Keyword substitution: kv
Default branch: MAIN
Current tag: version_2_7_X

Backport 1.72.

Removing use of Apache::lonlocal::getdatelocale() for 2.7.X.

Bugs: 5792 and 5798.
- Uses DateTime, DateTime::Locale, DateTime::Locale::Catalog.
- Disposition of events in calendar display now consistent with current time zone.
- Timezone in effect is displayed in Calendar header line.
- First day of week determined from date localization in effect.
- Extra empty row eliminated from end of calendar.

- Default date localization can be set for domain from Default auth/language/timezone section of Domain Configuration.
- Date localization can also be set for a specific course via "Set Course environement".
- When in course context, course-specific date localization applies (if set), otherwise default date localization of domain of course (if set).  In other contexts, date localization of domain of user (if set) applies.

- Currently date localization is only used to determine starting day of the week (for building calendar display).  Future uses might consider date order/format for display of dates.

- &timehash() and &maketime() routines in loncommon.pm modified to use time zones.
- &nextday() routine in lonannounce.pm modified to correctly identify next day.
- &getdatelocale() routine added to lonlocal.pm to retrieve date locale object.