Add check to prevent scoreboards merging.

src/main/java/com/massivecraft/factions/scoreboards/BufferedObjective.java

@@ -54,6 +54,9 @@ public class BufferedObjective {
     }
 
     public void setAllLines(List<String> lines) {
+        if(lines.size() != contents.size()) {
+            contents.clear();
+        }
         for (int i = 0; i < lines.size(); i++) {
             setLine(lines.size() - i, lines.get(i));
         }