Crusader Kings II v1.04c Hotfix

Description
This patch will update Crusader Kings 2 to version 1.04c.
1.04c CHANGE LOG:

- Fixed a random \"freeze\" issue that could occur during normal gameplay
- Fixed a resign CTD and related issues with Holdings not being entirely reset on resign
- Fixed a problem with white looking terrain on certain graphics cards
- Fixed an issue with historical characters not getting some random traits at start
- The console command \"observe\" should no longer crash the game
- Reverted to 1.03b version of audio code for greater compatibility with older machines