More defibrillator work

- Fix string for activating and de-activating the defib
- Changed values to be closer to my previous changes
- Changed a few strings
- Re-added set-up delay
- Defib should no longer revive bodies when they have no client. That's
what happen when you redo changes only halfway
- Re-added temporary eye blur and paralyze on defib. By all measures, it
should not cause further problems
- Added very slight damage on each defib attempt, regardless of success.
25 % chance of heart damage if SUCCESFUL and rand(1, 5) burn damage to
chest every time
Is it wise to set this manually instead of just having it be determined by damage?