Remove uneditable sign warning from database

SpigotCore_Main/src/de/steamwar/sql/SWException.java

@@ -76,7 +76,7 @@ public class SWException {
             if(message.startsWith(reason))
                 return;
 
-        if(message.contains("moved too quickly!") || message.contains("moved wrongly!") || message.contains("was kicked for floating too long!"))
+        if(message.contains("moved too quickly!") || message.contains("moved wrongly!") || message.contains("was kicked for floating too long!") || message.contains("just tried to change non-editable sign"))
             return;
 
         switch (message) {