fix(core): fixed some small bugs

src/core/node.js

@@ -243,7 +243,7 @@ define(function(require, exports, module) {
         },
 
         getCommonAncestor: function(node) {
-            return MinderNode.getNodeCommonAncestor(this, node);
+            return MinderNode.getCommonAncestor(this, node);
         },
 
         contains: function(node) {

src/core/render.js

@@ -152,6 +152,9 @@ define(function(require, exports, module) {
                             renderer.getRenderShape().setVisible(false);
                             lastBoxes[j] = null;
                         }
+                        
+                        // 更新 render 的 contentBox
+                        renderer.contentBox = lastBoxes[j];
                     }
                 }
 

src/module/priority.js

@@ -30,7 +30,7 @@ define(function(require, exports, module) {
 
         var PRIORITY_DATA = 'priority';
 
-        // 进度图标的图形
+        // 优先级图标的图形
         var PriorityIcon = kity.createClass('PriorityIcon', {
             base: kity.Group,