* added display of date to calendar entries (if not today)
* switched formatting of date in calendar entries from manual localized formatting strings to DateUtils locale-aware format methods
removed display of date in calendar entries when shown interval is below one week

Change-Id: I54506a1dacc0b4121df63a184535964bb9b70289
Merge branch 'enh_calendar_show_dates' into ne

Change-Id: I40086c6c4878dc225294eecfef80e1d44ba39cb4