Settings > Clock gets a "Week starts on" row: Automatic, which follows
the locale (and with it Android 14's regional first-day preference), or
any of the seven days, after Calendula's own. The repeat-day buttons in
the alarm editor and on the bedtime screen, and the alarm list's day
summaries, start on the chosen day. MainActivity reads the preference
once and provides it as LocalWeekStart.
Stored under Calendula's key name, week_start, and carried in the
backup; a file without it, or with a value this version does not know,
restores Automatic.
Closes#30.
makiolaj
3e74d03ea7