Reduced logging

app/src/main/java/eu/faircode/email/FragmentDialogTheme.java

@@ -531,6 +531,7 @@ public class FragmentDialogTheme extends FragmentDialogBase {
                     return (night ? R.style.AppThemeYouReversedBlack : R.style.AppThemeYouReversedLight);
 
             default:
+                if (!theme.startsWith("you_"))
                     Log.e("Unknown theme=" + theme);
                 return R.style.AppThemeBlueOrangeLight;
         }