Echoes of the Architects Demo - Update 0.116

[p]Integrated new musics for the Acid Desert and Colossal Heart maps[/p]
[p]Stats now show armor per unit instead of total group armor in the unit editor[/p]
[p]The unit editor play button now launches the next campaign mission if the previous one was won[/p]
[p]Improved the language list in the options menu[/p]
[p]Added the demo intro panel[/p]
[p]Fixed the tutorial instruction sometimes appearing in freeplay missions[/p]