Sorting: Fix mix of tabs and spaces for datetime-moment plug-in

- Also use $.trim for whitespace removal. We've got jQuery, so might as
  well use it for compatibility

sorting/datetime-moment.js

@@ -38,10 +38,9 @@ $.fn.dataTable.moment = function ( format, locale ) {
 			if ( d.replace ) {
 				d = d.replace(/(<.*?>)|(\r?\n|\r)/g, '');
 			}
-			// Strip out surrounding whitespace if possible
-	        if ( d.trim ) {
-	            d = d.trim();
-	        }
+
+			// Strip out surrounding white space
+			d = $.trim( d );
 		}
 
 		// Null and empty values are acceptable
@@ -61,10 +60,9 @@ $.fn.dataTable.moment = function ( format, locale ) {
 			if ( d.replace ) {
 				d = d.replace(/(<.*?>)|(\r?\n|\r)/g, '');
 			}
-			// Strip out surrounding whitespace if possible
-	        if ( d.trim ) {
-	            d = d.trim();
-	        }
+
+			// Strip out surrounding white space
+			d = $.trim( d );
 		}
 		
 		return d === '' || d === null ?