New features implemented:

New features implemented:

 * Configurable defaults for the calendar upcoming events lookahead and
   maximum upcoming events displayed (bug #1623)

 * Configurable setting for which days of the week are treated as weekend
   (bug #1919)

 * Configurable setting for which day starts the week (the admin can now set
   this as the default for new users and guests without messing with language
   packs) (no butracker issue)