(js) Use more one-time bindings in Calendar module

UI/WebServerResources/js/Scheduler/Component.service.js

@@ -672,6 +672,19 @@
     return (this.occurrenceId && this.userHasRSVP);
   };
 
+  /**
+   * @function showPercentComplete
+   * @memberof Component.prototype
+   * @desc Check if the percent completion should be displayed with respect to the
+   *       component's type and status.
+   * @returns true if the percent completion should be displayed
+   */
+  Component.prototype.showPercentComplete = function() {
+    return (this.type == 'task' &&
+            this.percentComplete > 0 &&
+            this.status != 'cancelled');
+  };
+
   /**
    * @function enablePercentComplete
    * @memberof Component.prototype
@@ -681,7 +694,7 @@
    */
   Component.prototype.enablePercentComplete = function() {
     return (this.type == 'task' &&
-            this.percentComplete > 0 &&
+            this.status != 'not-specified' &&
             this.status != 'cancelled');
   };