Merge pull request #2551 from lol768/patch-1

Escape apostrophes in localised strings

src/main/java/com/gmail/nossr50/locale/LocaleLoader.java

@@ -57,7 +57,7 @@ public final class LocaleLoader {
     public static String formatString(String string, Object... messageArguments) {
         if (messageArguments != null) {
             MessageFormat formatter = new MessageFormat("");
-            formatter.applyPattern(string);
+            formatter.applyPattern(string.replace("'", "''"));
             string = formatter.format(messageArguments);
         }