Merge remote-tracking branch 'upstream/master' into liquid63
GUIFormSpecMenu focus fixes
World config dialog: Use engine determined path for game mods
Allow SIGINT to kill mainmenu again
Fix gettext for tabs (windows)
Merge branch 'liquid63' into all
Merge branch 'weather' into all
Merge branch 'math' into all
Merge branch 'sqlite' into all
Merge branch 'json' into all
Merge branch 'heat' into all