Correct common properties

#270
For only one result we will have:
Znaleziono 1 orzeczenia
I think that it would be nicer if we get
Znaleziono 1 orzeczenie
I don't know if it would work but you could try
`Znaleziono {0,choice,1#<strong>{0}</strong> orzeczenie|1<<strong>{0}</strong> orzeczenia|4<<strong>{0}</strong> orzeczeń}`