documentation for truncate fitler + only space between dots and words in wordwise mode.

src/Umbraco.Web.UI.Client/src/common/filters/truncate.filter.js

@@ -1,3 +1,15 @@
+/**
+ * @ngdoc filter
+ * @name umbraco.filters.filter:truncate
+ * @namespace truncateFilter
+ * 
+ * param {any} wordwise if true, the string will be cut after last fully displayed word.
+ * param {any} max max length of the outputtet string
+ * param {any} tail option tail, defaults to: ' ...'
+ *
+ * @description
+ * Limits the length of a string, if a cut happens only the string will be appended with three dots to indicate that more is available.
+ */
 angular.module("umbraco.filters").filter('truncate', 
     function () {
         return function (value, wordwise, max, tail) {
@@ -13,7 +25,7 @@ angular.module("umbraco.filters").filter('truncate',
                     value = value.substr(0, lastspace);
                 }
             }
-            return value + (tail || ' …');
+            return value + (tail || (wordwise ? ' …' : '…'));
         };
     }
 );