bugfix: #138，内存泄漏问题

modules/mogo-module-extensions/src/main/java/com/mogo/module/extensions/utils/EntranceViewHolder.java

@@ -273,6 +273,8 @@ public class EntranceViewHolder {
 
     public void release(){
         rootViewGroup = null;
+        featureViewGroup = null;
+        leftNoticeContainer = null;
     }
 
 }

modules/mogo-module-extensions/src/main/java/com/mogo/module/extensions/utils/TopViewAnimHelper.java

@@ -473,6 +473,7 @@ public class TopViewAnimHelper {
         topMotionLayout = null;
         topContainer = null;
         cameraMode = null;
+        animNavInfoView = null;
     }
 
     public void enterVrMode() {