add field description and title

app/javascript/submission_form/phone_step.vue

@@ -2,10 +2,25 @@
   <div>
     <label
       :for="isCodeSent ? 'one_time_code' : field.uuid"
-      class="label text-2xl mb-2"
-    >{{ showFieldNames && field.name ? field.name : t('verified_phone_number') }}
-      <template v-if="!field.required">({{ t('optional') }})</template>
+      class="label text-2xl"
+      :class="{ 'mb-2': !field.description }"
+    >
+      <MarkdownContent
+        v-if="field.title"
+        :string="field.title"
+      />
+      <template v-else>
+        {{ showFieldNames && field.name ? field.name : t('verified_phone_number') }}
+        <template v-if="!field.required">({{ t('optional') }})</template>
+      </template>
     </label>
+    <div
+      v-if="field.description"
+      dir="auto"
+      class="mb-3 px-1"
+    >
+      <MarkdownContent :string="field.description" />
+    </div>
     <div>
       <input
         type="hidden"
@@ -68,6 +83,8 @@
 </template>
 
 <script>
+import MarkdownContent from './markdown_content'
+
 function throttle (func, delay) {
   let lastCallTime = 0
 
@@ -83,6 +100,9 @@ function throttle (func, delay) {
 
 export default {
   name: 'PhoneStep',
+  components: {
+    MarkdownContent
+  },
   inject: ['t', 'baseUrl'],
   props: {
     field: {