Translations for review by Aliaksandr Tsukanau

These translations are available to be reviewed by Aliaksandr Tsukanau:

gnome-calendar needs 12 strings reviewed in Belarusian
ubiquity needs 6 strings reviewed in Belarusian
gnome-control-center needs 16 strings reviewed in Belarusian
gnome-shell needs 8 strings reviewed in Belarusian