Feat/scatterplot rasterizer 34

• Replace static title and labels by user supplied values
• Use column view for legend
• correct label order

src/main/java/de/tudresden/inf/mci/brailleplot/rendering/LiblouisBrailleTextRasterizer.java

@@ -169,7 +169,7 @@ public class LiblouisBrailleTextRasterizer implements Rasterizer<BrailleText> {
         } else {
             tempMaxWidth = maxWidth;
         }
-        return (int) ceil((double) widthOfText / (double) tempMaxWidth);
+        return (int) ceil((double) widthOfText / (double) (tempMaxWidth / 2));
 
     }