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
stat is normally decided by how much damage someone has taken, isn't it? If you set stat, but their damage would normally give them another stat, doesn't that cause a conflict?