Virus: Some improvements:

* Add camper warnings for uninfected which only show for infected
* Add configs for camper warnings
* Add config to disallow superweapons
* Add config to disallow adrenalin
* Add config to disallow pickups (except from weaponbases)
Virus: Show weapon info even in infected state

Also cleanup some code
Virus: Add configurable friendly fire scale between uninfected players

This includes score reduction for friendly fire kills if friendly fire scale is not 0

Also reduce score on self kills now
Virus: Display black vignette HUD overlay for uninfected players after the virus begins to spread

Feel the horror!
Virus: Reduce player score by 1 if he is camping
Virus: Bump to 1.3
Virus: Infected players can now only have the shield gun equipped
Virus: Freshly infected players do no longer immediately get full health

They regenerate anyway
Virus: Publish 1.3