build: fix checkstyle and some tests

Author: jknack

handlebars/src/main/java/com/github/jknack/handlebars/helper/StringHelpers.java

@@ -103,7 +103,7 @@ protected CharSequence safeApply(final Object value, final Options options) {
    * If value is "String with spaces", the output will be "Stringwithspaces".
    */
   cut {
-    @Override public Object apply(Object context, Options options) throws IOException {
+    @Override public Object apply(final Object context, final Options options) throws IOException {
       return safeApply(context, options);
     }
 

handlebars/src/test/java/com/github/jknack/handlebars/helper/StringHelpersTest.java

@@ -471,6 +471,7 @@ public void nullContext() throws IOException {
     helpers.remove(StringHelpers.join);
     helpers.remove(StringHelpers.yesno);
     helpers.remove(StringHelpers.defaultIfEmpty);
+    helpers.remove(cut);
 
     Options options = mock(Options.class);
     when(options.isFalsy(any())).thenReturn(true);
@@ -490,6 +491,7 @@ public void nullContextWithDefault() throws IOException {
     helpers.remove(StringHelpers.join);
     helpers.remove(StringHelpers.yesno);
     helpers.remove(StringHelpers.defaultIfEmpty);
+    helpers.remove(cut);
 
     String nothing = "nothing";
     Options options = mock(Options.class);
@@ -510,6 +512,7 @@ public void nullContextWithNumber() throws IOException {
     helpers.remove(StringHelpers.join);
     helpers.remove(StringHelpers.yesno);
     helpers.remove(StringHelpers.defaultIfEmpty);
+    helpers.remove(cut);
 
     Object number = 32;
     Options options = mock(Options.class);