Refactor admin donation pages, fix errors

Not sending the right response codes for Turbo to handle.

app/views/admin/donations/_form.html.erb

@@ -1,16 +1,16 @@
 <%= form_with(url: url, model: donation, local: true) do |form| %>
   <% if donation.errors.any? %>
-    <div id="error_explanation">
+    <section id="error_explanation">
       <h3><%= pluralize(donation.errors.count, "error") %> prohibited this donation from being saved:</h3>
-      <ul>
+      <ul class="list-disc list-inside">
         <% donation.errors.full_messages.each do |message| %>
           <li><%= message %></li>
         <% end %>
       </ul>
-    </div>
+    </section>
   <% end %>
 
-  <div class="sm:w-1/2 grid grid-cols-2 items-center gap-y-2">
+  <section class="sm:w-1/2 grid grid-cols-2 items-center gap-y-2">
     <%= form.label :user_id %>
     <%= form.collection_select :user_id, User.where(ou: "kosmos.org").order(:cn), :id, :cn, {} %>
 
@@ -28,9 +28,14 @@
 
     <%= form.label :paid_at %>
     <%= form.text_field :paid_at %>
-  </div>
+  </section>
 
-  <p class="mt-8">
-    <%= form.submit class: 'btn-md btn-blue' %>
-  </p>
+  <section>
+    <p class="pt-6 border-t border-gray-200 text-right">
+      <%= link_to 'Cancel',
+            @donation.id.present? ? admin_donation_path(@donation) : admin_donations_path,
+            class: 'btn-md btn-gray' %>
+      <%= form.submit class: 'ml-2 btn-md btn-blue' %>
+    </p>
+  </section>
 <% end %>

app/views/admin/donations/edit.html.erb

@@ -2,8 +2,4 @@
 
 <%= render MainSimpleComponent.new do %>
   <%= render 'form', donation: @donation, url: admin_donation_path(@donation) %>
-
-  <p class="mt-8">
-    <%= link_to 'Cancel', admin_donation_path(@donation), class: 'btn-sm btn-gray' %>
-  <p>
 <% end %>

app/views/admin/donations/new.html.erb

@@ -2,8 +2,4 @@
 
 <%= render MainSimpleComponent.new do %>
   <%= render 'form', donation: @donation, url: admin_donations_path %>
-
-  <p class="mt-8">
-    <%= link_to 'Back', admin_donations_path, class: 'ks-text-link' %>
-  </p>
 <% end %>

app/views/admin/donations/show.html.erb

@@ -33,9 +33,9 @@
   </section>
 
   <section>
-    <p>
-      <%= link_to 'Edit', edit_admin_donation_path(@donation), class: 'btn-md btn-blue mr-1' %>
+    <p class="pt-6 border-t border-gray-200 text-right">
       <%= link_to 'Back', admin_donations_path, class: 'btn-md btn-gray' %>
+      <%= link_to 'Edit', edit_admin_donation_path(@donation), class: 'ml-2 btn-md btn-blue mr-1' %>
     </p>
   </section>
 <% end %>