Hide help card header text (#3410)

* Hide help card header text

* Looks better this way

android/engine/src/main/res/values/dimens.xml

@@ -0,0 +1,19 @@
+<?xml version="1.0" encoding="utf-8" ?>
+<!--
+ Copyright 2021 Google LLC
+
+ Licensed under the Apache License, Version 2.0 (the "License");
+ you may not use this file except in compliance with the License.
+ You may obtain a copy of the License at
+
+      http://www.apache.org/licenses/LICENSE-2.0
+
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ See the License for the specific language governing permissions and
+ limitations under the License.
+-->
+<resources>
+    <dimen name="help_header_margin_bottom">0dp</dimen>
+</resources>

android/engine/src/main/res/values/strings.xml

@@ -185,6 +185,7 @@
     <string name="add">ADD</string>
     <string name="data_migration_started">Started data migration from version %1$d</string>
     <string name="data_migration_completed">Application data migrated to version %1$d</string>
+    <string name="help"></string>
     <string name="no_data">No data set</string>
     <string name="default_html_title">file</string>
 </resources>

android/engine/src/main/res/values/styles.xml

@@ -59,19 +59,18 @@
         <item name="android:textColorSecondary">@color/white</item>
         <item name="questionnaireSubmitButtonStyle">@style/AppTheme.QuestionnaireSubmitButtonStyle</item>
         <item name="questionnaireButtonStyle">@style/AppTheme.QuestionnaireButtonStyle</item>
-        <item name="questionnaireMediaImageStyle">@style/AppTheme.MediaImageStyle</item>
         <item name="questionnaireCancelButtonStyle">@style/AppTheme.QuestionnaireCancelButtonStyle</item>
         <item name="questionnaireGroupTypeQuestionTextStyle">@style/TextAppearance.Material3.HeadlineMedium</item>
         <item name="questionnaireQuestionTextStyle">@style/TextAppearance.Material3.BodyLarge</item>
+        <item name="questionnaireMediaImageStyle">@style/AppTheme.MediaImageStyle</item>
+        <item name="questionnaireHelpHeaderStyle">@style/AppTheme.HelpHeaderStyle</item>
         <!-- Help card container color -->
         <item
             name="android:colorBackground"
             >@color/background_neutral_100</item>
         <item name="colorOnBackground">@color/onBackground_neutral_10</item>
-
         <item name="colorSurface">@color/surface_neutral_100</item>
         <item name="colorOnSurface">@color/onSurface_neutral_10</item>
-
         <item
             name="colorSurfaceVariant"
             >@color/surfaceVariant_neutral_variant_90</item>
@@ -108,4 +107,9 @@
             >@dimen/item_media_image_margin_vertical</item>
     </style>
 
+    <style name="AppTheme.HelpHeaderStyle" parent="TextAppearance.Material3.TitleSmall">
+        <item name="android:visibility">invisible</item>
+        <item name="android:height">0dp</item>
+    </style>
+
 </resources>