Sources are UTF-8 so might as well use the raw character when specifying...

Sources are UTF-8 so might as well use the raw character when specifying something that will be a part of output.

core/src/main/java/hudson/Functions.java

@@ -257,7 +257,7 @@ public class Functions {
      * like "-5", "+/-0", "+3".
      */
     public static String getDiffString(int i) {
-        if(i==0)    return "\u00B10";   // +/-0
+        if(i==0)    return "±0";
         String s = Integer.toString(i);
         if(i>0)     return "+"+s;
         else        return s;

core/src/main/java/hudson/model/AbstractItem.java

@@ -323,7 +323,7 @@ public abstract class AbstractItem extends Actionable implements Item, HttpDelet
     public final String getFullDisplayName() {
         String n = getParent().getFullDisplayName();
         if(n.length()==0)   return getDisplayName();
-        else                return n+" \u00BB "+getDisplayName();
+        else                return n+" » "+getDisplayName();
     }
     
     /**