NPC lookup issues with Skyrim and Fallout 4 + Audio file copy issues for FO4

[YetAnotherModder]

FO4 Mantella is crashing when trying to load missing voice files that are absent for Mantella.esp.
FO4 Mantella is needlessly copying voice files to the Mantella.esp directory.
FEMALE_VOICE_MODELS & MALE_VOICE_MODELS lookup functions are doomed to fail because they're missing "Race" at the end of the search string for both Fallout4.py & Skyrim.py
If condition check for actor_race are doomed to fail in the prepare_sentence_for_game() function for Skyrim and Fallout due to being formatted to a string.

See for fixes :
#293