[TESTS] add two test cases for loading conf big_msg_repeat for Frostbite2 games : now cover cases where case varies and where users use unexpected values
[TESTS] Frostbite2: add test cases for `saybig()` and `message()` depending on `big_b3_private_responses` and ` big_msg_repeat`
Merge pull request #1 from thomasleveil/features/repeat_sayLoudOrPM

add more test cases for sayLourdOrPM changes