Another Small update

-Added cycle fabricator, land factory and air factory hotkeys
-Detect missing or bad openGL drivers and show a message with info
-Fixed crash from out of range keyboard input
-Switching to advanced skirmish not transferring AI difficulty
-Crash details show in popup (helps modders if they make syntax errors)
-More reliable shutdown after exception
-Fix AI showing as disconnected
-Fixed sandbox editor not showing till units are deselected (due to builder being auto selected)

This update should be compatible in multiplayer with the old version.