Updated Code to use extDB fetch method 4

Bumps extDB requirements to 19+
This is not required, its just an alternative way of getting results
from extDB.

Basicly getting result will take a minimal of 1 callExtension was 2
before.
For multipart messages will be (multi-messages + 2), before was
(multi-messages +1).

Considering old code was bugged due to format string size limit + no-one
noticed really.
Except people with custom Wanted List, safe to say 90%+ of Altis Life
RPG fetching results can fit in single message.
Last i checked message size for arma3 was about 10k.