定额章节树添加说明explanation字段，计算规则ruleText字段

modules/ration_repository/models/ration_section_tree.js

@@ -14,6 +14,8 @@ var rationChapterTreeSchema = new Schema({//章节树  //生成唯一id改为sec
     ParentID:Number,
     NextSiblingID:Number,
     name: String,
+    explanation: String,//说明
+    ruleText: String,//计算规则
     isDeleted: Boolean
 });
 var rationChapterTreeModel = chapterTreeDb.model("std_ration_lib_ration_chapter_trees", rationChapterTreeSchema, "std_ration_lib_ration_chapter_trees");