Merge branch 'TimePath/soundregistry' into 'master'

Sound registry

Destringified sounds in favor of constants

Automated precaching

Closes #1303

See merge request !226

diff --cc qcsrc/Makefile
Simple merge

diff --cc qcsrc/lib/_all.inc
Simple merge

diff --cc qcsrc/server/cl_player.qc
Simple merge

diff --cc qcsrc/server/miscfunctions.qc
Simple merge

diff --cc qcsrc/server/t_items.qc
Simple merge