Strings First and Last in messages.po used in different contexts with different meanings,
giving funny results when translated, as most languages do not use literally "last" name label.
Code Occurences
include/class.schedule.php:578/558
include/class.schedule.php:1199/1204
include/class.schedule.php:1228/1233
Context: First / last item of a date array
include/class.user.php:808/809
Context: First / last name