Changed flow to upload directly to s3 if non empty file.

Then on check page file read back from s3 and checked.

app/templates/views/check-sms.html

@@ -59,8 +59,6 @@
 					back_link = url_for(".sendsms", service_id=service_id)
 			)}}
 
-			<input type='hidden' name='recipients' value='{{filename}}'>
-
 		</form>
 	{% endif %}
 {% endblock %}