Fix U.capitalize() and U.uncapitalize() methods.

Author: javadev

src/main/java/com/github/underscore/lodash/U.java

@@ -1206,11 +1206,11 @@ public static String upperFirst(final String string) {
     }
 
     public static String capitalize(final String string) {
-        return upperFirst(baseToString(string).toLowerCase());
+        return upperFirst(baseToString(string));
     }
 
     public static String uncapitalize(final String string) {
-        return lowerFirst(baseToString(string).toLowerCase());
+        return lowerFirst(baseToString(string));
     }
 
     private static String baseToString(String value) {