renamed sounds to match filenames in source (lowercase .wav), fixed up scenario and character editors

rsrc/SConscript

@@ -12,7 +12,7 @@ env.Install(path.join(data_dir, "cursors"), Glob("cursors/*.gif"))
 env.Install(path.join(data_dir, "dialogs"), Glob("dialogs/*.xml"))
 env.Install(path.join(data_dir, "fonts"), Glob("fonts/*.ttf"))
 env.Install(path.join(data_dir, "graphics"), Glob("graphics/*.png"))
-env.Install(path.join(data_dir, "sounds"), Glob("sounds/*.WAV"))
+env.Install(path.join(data_dir, "sounds"), Glob("sounds/*.wav"))
 env.Install(path.join(data_dir, "strings"), Glob("strings/*.txt"))
 
 env.Install(path.join(data_dir, "shaders"), Glob("#src/tools/mask.*"))