Merge branch 'develop/3.1.0' into test

src/pages/help/index.vue

@@ -17,7 +17,7 @@
         <uni-icons class="close" type="closeempty" color="#FFF" size="12" @click="getDelete(index)" />
         <img :src="item" />
       </view>
-      <button v-if="form.imageFiles.length < 9" @click="upload">
+      <button v-if="imageFiles.length < 9" @click="upload">
         <uni-icons type="plusempty" color="#A4D099" size="36" />
       </button>
     </view>