Merge MR 'Make trace entity culling optional for spectators'

https://gitlab.com/xonotic/darkplaces/-/merge_requests/115
https://github.com/DarkPlacesEngine/darkplaces/pull/13

branch: bones_was_here/trace
commits: 2c1140a494598d75a12c01f82d7c9accff974fbb

Signed-off-by: bones_was_here <bones_was_here@xa.org.au>

diff --cc server.h
Simple merge

diff --cc sv_main.c
Simple merge

diff --cc sv_send.c
Simple merge