Implementing gender-based messages for various states of soldier in battlescape.

Some languages have gender-specific morphemes for verbs in past simple.
For example, in Russian we have these different sentences:
  - Анна Иванова потеряла сознание ("Anna Ivanova has become unconscious", female name)
  - Павел Иванов потерял сознание ("Pavel Ivanov has become unconscious", male name)

This commit adds 5 more strings to translate:

STR_HAS_GONE_BERSERK_FEMALE
has gone Berserk
STR_HAS_PANICKED_FEMALE
has Panicked
STR_HAS_BECOME_UNCONSCIOUS_FEMALE
 has become unconscious
STR_HAS_DIED_FROM_A_FATAL_WOUND_FEMALE
 has died from a fatal wound
STR_HAS_BEEN_KILLED_FEMALE
has been Killed