integrated and updated calendar translations

.tx/config

apps/calendar/l10n/bg_BG.php

apps/calendar/l10n/ca.php

apps/calendar/l10n/da.php

apps/calendar/l10n/de.php

apps/calendar/l10n/el.php

apps/calendar/l10n/es.php

apps/calendar/l10n/et_EE.php

apps/calendar/l10n/fr.php

apps/calendar/l10n/id.php

apps/calendar/l10n/it.php

apps/calendar/l10n/lb.php

apps/calendar/l10n/ms_MY.php

apps/calendar/l10n/nb_NO.php

apps/calendar/l10n/nl.php

apps/calendar/l10n/pl.php

apps/calendar/l10n/pt_BR.php

apps/calendar/l10n/ro.php

apps/calendar/l10n/ru.php

apps/calendar/l10n/sr.php