As title say here is translation to Serbian language. There are only two strings that aren't translated and one missing (also missing in French and English vocab):
$vocab["book_ahead_note_periods"] = "When using periods, book ahead times are rounded down to the nearest whole day.";
I rely don't understand what this should mean (is it related to reservations that last longer than all periods in one day so they are moved to next day or to reservations that can't be made in specific day because there is some reservations that is taking one period of let say potential 5 and new reservation has to take all 5 periods so it is automatically moved to next day that have all 5 periods free.)
$vocab["no_LOCATION"] = "The VEVENT did not include a LOCATION property";
I haven't used import tool jet so I haven't seen this massage, and without context I can't translate it.
Missing string is first option related to $vocab["sort_rep"] (Sort report by:) string at reports page (option before Start date/time)
So, can someone provide me a help for those strings?
Also, I have included a small explanation at the end of vocabulary for how to enter words for custom fields.