removing unneeded headers.
Merge remote-tracking branch 'origin/develop' into errorui
fixed build on linux. not running yet.
cleaning up old copied headers.
splitting downloading in 3 systems.
added libevent, to help us later with curl multithreaded.
Curl Easy is working.
curl Multi is not implemented
Merge remote-tracking branch 'origin/develop' into errorui
Merge remote-tracking branch 'origin/game/DLC_system_integration' into errorui
ErrorUI changes and also add to android build
ErrorUI moved do loadingscene