Hide the SMS phone number in lists and forms, disable the buttons to
change it if the property is read-only, add an option to define if the
user is asked or not for SMS phone number at login

Merge branch 'projectbroker_fix_date' of git://github.com/melkor0/OpenOLAT into melkor0-projectbroker_fix_date

A space is added between the starting / ending label an its date.

Change the two spaces in 'table.event.end.label' and 'table.event.end.label' to match the other languages.