Merge pull request #996 in BA/design from ~JU/ba-9.0-design:9.0 to 9.0

* commit 'b2db63a2138b654a3695118cefa1f275bbaf60c4':
  PFC-607 插件安装删除更新不重启支持 解决SandboxCollection，不关闭插件就无法GC相关对象的问题。改成了在内部类中只保存一个ID，不引用具体的对象。

designer_base/src/com/fr/design/DesignerEnvManager.java

@@ -152,7 +152,6 @@ public class DesignerEnvManager implements XMLReadable, XMLWriter {
                     designerEnvManager.setCurEnvName(name);
                 }
             }
-        }
     
             GeneralContext.addEnvChangedListener(new EnvChangedListener() {
                 @Override
@@ -163,6 +162,9 @@ public class DesignerEnvManager implements XMLReadable, XMLWriter {
                 }
             });
     
+        }
+
+      
         return designerEnvManager;
     }