Use message_count_label component

For the button on the check page, we need to be able to say ‘1 text message’ or
‘55 emails’. We already have the logic to do this on the dashboard (101 text
messages sent), and it’s already in a component. So this commit makes the check
page use the same component.

app/main/views/send.py

@@ -31,19 +31,6 @@ from app import job_api_client, service_api_client, current_service, user_api_cl
 from app.utils import user_has_permissions, get_errors_for_csv, Spreadsheet
 
 
-def get_send_button_text(template_type, number_of_messages):
-    if 1 == number_of_messages:
-        return {
-            'email': 'Send 1 email',
-            'sms': 'Send 1 text message'
-        }[template_type]
-    else:
-        return {
-            'email': 'Send {} emails',
-            'sms': 'Send {} text messages'
-        }[template_type].format(number_of_messages)
-
-
 def get_page_headings(template_type):
     return {
         'email': 'Email templates',
@@ -279,7 +266,6 @@ def check_messages(service_id, template_type, upload_id):
             len(list(recipients.initial_annotated_rows))
         ),
         original_file_name=session['upload_data'].get('original_file_name'),
-        send_button_text=get_send_button_text(template.template_type, session['upload_data']['notification_count']),
         upload_id=upload_id,
         form=CsvUploadForm(),
         statistics=statistics,