Added an sr-only alert to the site for upload errors (and any other errors we might want to only announce to the screen reader)

app/templates/views/check/column-errors.html

@@ -23,6 +23,9 @@ Error
 <div class="">
   {% call banner_wrapper(type='dangerous') %}
 
+  {# Alert for users of AT #}
+  <span id="upload-error" class="usa-sr-only">File upload failed</span>
+
   {% if recipients.too_many_rows %}
 
   <div class="usa-alert usa-alert--error" role="alert">

app/templates/views/check/ok.html

@@ -21,6 +21,8 @@
 
   {{ template|string }}
   <div class="bottom-gutter-3-2">
+    {# Alert for users of AT #}
+    <span id="upload-success" class="usa-sr-only">File upload successful</span>
     <form method="post" enctype="multipart/form-data" action="{{url_for('main.preview_job', service_id=current_service.id, template_id=template_id, upload_id=upload_id)}}" class='page-footer'>
       <input type="hidden" name="csrf_token" value="{{ csrf_token() }}" />
       {% if choose_time_form %}

app/templates/views/check/row-errors.html

@@ -17,6 +17,8 @@
 
   <div class="">
     {% call banner_wrapper(type='dangerous') %}
+    {# Alert for users of AT #}
+    <span id="upload-failed" class="usa-sr-only">File upload failed</span>
       {% if row_errors|length == 1 %}
         <div class="usa-alert usa-alert--error" role="alert">
           <div class="usa-alert__body">