Migrate to Rais 8.0

- Remove all Rodauth stuff and implement simple custom auth
- Migrate from sprockets to propshaft, hack some bootstrap stuff

app/views/layouts/_sidebar.html.erb

@@ -4,7 +4,7 @@
       <% if @sidebar_items %>
         <% @sidebar_items.each do |sidebar_item| %>
           <% if sidebar_item[:method].present? && sidebar_item[:method] != :get %>
-            <%= button_to(sidebar_item[:path], method: sidebar_item[:method], class: "list-group-item border-end-0 d-inline-block text-truncate") do %>
+            <%= button_to(sidebar_item[:path], method: sidebar_item[:method], class: "list-group-item border-0 d-inline-block text-truncate") do %>
               <% if sidebar_item[:icon] %>
                 <span aria-hidden="true" class="bi-<%= sidebar_item[:icon] %>"></span>
               <% end %>