Random firing: avoid possible /0.
Fix a possible include path overflow.
Replace a trap_EntitiesInBox with G_IterateEntitiesWithinRadius, fix a coverty issue.
Pointless null checks.
Refactor switch into something more readable
Use pointer after checking for NULL.
More pointless NULL checks.
Add some NULL checks.
Fix some broken NULL checking.
Avoid possible NULL derefs in packet parsing.
Combine two identical cases in a switch block.
strcpy → Q_strncopyz & strcat → strncat.

(Some are left unchanged.)
Fix/remove comparisons of arrays against 0.
Ensure that the file is closed if there's an error while copying.
Handle some ftell() calls returning EOF.
Implement map reverb effect entities

I did not really test that it works on map using these entities yet
but it works on regular maps.
The reverb can be added to func_static the same way colorgrading is
the keys are:
* reverbEffect <argument to /testReverb>
* reverbDistance <float>
Also reverbEffect can be used on the worldspawn for a global effect.
Audio: remove leftover debug
Fix team-specific /editbind (missing a space).
Correctly quote console comands which are passed to the server.

This fixes commands such as /vsay_team incoming "Enemy incoming!"
Don't unnecessarily quote escaped strings.