Add desaturation effect when low on blood. Closes #294
Moved unconciousness effects (graphical and controls on/off) to the loop on clientInit.
Moved volume limiting when unconcious to AGM_Hearing, because it was overrided there.
Merge pull request #393 from esteldunedain/refactoredMedicalEffects

Add desaturation effect when low on blood. Fixes #294 and #395.