Default Style|OS X: Use Open Sans as UI font (like on Windows)

Standardizing appearance. Also, Qt is having real difficulties
picking the right font weights on Mavericks, which makes things
look ugly with Helvetica Neue. Let’s hope that future updates will
fix this.

doomsday/client/data/defaultstyle.pack/fonts.dei

@@ -4,25 +4,29 @@
 # - weight: normal bold light
 # - style: normal italic
 
-script { import Version, gui }
+script { 
+    import Version, gui 
+    # Load the Open Sans font contained in this pack.
+    def loadOpenSans()
+        import App, Path
+        fontDir = Path.fileNamePath(__file__) / "fonts"
+        # Sadly, light fonts seem to not work in Qt presently.
+        for style in ['Regular', 'Bold', 'Italic', 'BoldItalic']  #'Light', 'LightItalic'
+            App.loadFont(fontDir / ("OpenSans-%s.ttf" % style))
+        end    
+    end
+}
 
 group {
     condition: Version.OS == 'windows'
 
+    script { loadOpenSans() }
+
     font default {
         family: Open Sans
         size: 12pt
         weight: normal
-        style: normal
-
-        script {
-            # Load the Open Sans font contained in this pack.
-            import App, Path
-            fontDir = Path.fileNamePath(__file__) / "fonts"
-            for style in ['Regular', 'Bold', 'Italic', 'BoldItalic']
-                App.loadFont(fontDir / ("OpenSans-%s.ttf" % style))
-            end
-        }
+        style: normal    
     }
 
     font monospace inherits default {
@@ -33,9 +37,11 @@ group {
 
 group {
     condition: Version.OS == 'macx'
+
+    script { loadOpenSans() }
 
     font default {
-        family: Helvetica Neue
+        family: Open Sans
         size: 16pt
         weight: normal
         style: normal