Fix responsive layout for download box

Fixes #30

app/views/sessions/show.html.erb

-<div>
+<div class="max-w-full">
   <h6><%= link_to @session.conference.name, @session.conference %></h6>
   <h1 class="dark:text-red-500">
     <%= @session.title %>
@@ -30,8 +30,8 @@
   <ul class="space-y-4 my-4">
     <% @session.filedrop_files.each do |file| %>
     <li class="text-gray-500 dark:text-slate-400 shadow dark:shadow-gray-500 rounded-lg p-4">
-        <div class="flex flex-wrap justify-between items-start max-w-full">
-          <div>
+        <div class="flex justify-between items-center max-w-full">
+          <div class="overflow-x-auto mr-2 whitespace-nowrap">
             <div class="text-gray-900 dark:text-slate-300 text-lg font-semibold"><%= file.name %></div>
             <div class="text-sm">Size: <%= number_to_human_size(file.size) %></div>
             <div class="text-sm">Date: <%=file.orig_created&.in_time_zone(@session.conference.time_zone || 'UTC')&.strftime("%B %d, %Y %H:%M") %></div>