Fixing atomics
Using MemoryBarrier() for CPUs not supporting SSE2
Merge pull request #1084 from cinaera/atomics

Fixing atomics (threading)
 Fixed a missing check if killer is alive in tdm
Fixed removing tattoo/decoration in the skin creator. Closes #1099
prevent map editor from crashing if loaded map is invalid
Made client/server check for correct map version on load. #1100
made skin selector refresh on save and added delete functionality. Closes #1101
updated git ignore
added optional context to a localization string to allow multiple translations. Closes #1082
fixed tabs from last commit
Fix a spelling mistake "Spactating"->"Spectating"

There's spelling mistake in menus_ingame.cpp (line 99)
added operator != to the vec? templates

This fixes #1094 on GitHub.
removed weird if from the pure server/tune check

This fixes #1110 on GitHub.
Fixed spelling in src/engine/docs/snapshots.txt
net_addr_from_str() fix
Minimize warmup message after 10 seconds if only one player present
remove leading and trailing space from server name and forbit the use of multiple spaces
Changed font color for warmup message
made the settings menu close on escape press only if not online