Merge branch '04/22-index' into test

src/views/studentManager/studentList.vue

@@ -424,7 +424,7 @@
           </el-select>
         </el-form-item>
         <el-form-item prop="school" label="所属学校">
-          <el-select v-model.trim="studentForm.school" filterable clearable  :disabled='!studentForm.organId'>
+          <el-select v-model.trim="studentForm.school" filterable clearable  :disabled='!studentForm.organId'   class="multiple">
             <el-option
               v-for="(item, index) in cooperationList"
               :key="index"