🐛 Neutral Theme logged out home page styling

This commit:
- replaces the table structure with Bootstrap grid layout for logged out
view on the neutral theme homepage
- uses container-fluid and row classes to ensure collections sit side
by side on the homepage and ensures it is responsive
- maintain existing admin view with sortable interface
- ensure compatibility with neutral theme collection display

Ref:
- notch8/palni_palci_knapsack#240

app/views/hyrax/homepage/_featured_collection_section.html.erb

@@ -1,4 +1,4 @@
-<div id="featured_collections" >
+<div id="featured_collections">
   <% if @featured_collection_list.empty? %>
     <p id='no-collections'><%= t('hyrax.homepage.featured_collections.no_collections') %></p>
   <% elsif can? :update, FeaturedCollection %>
@@ -13,21 +13,21 @@
       <%= f.submit("Save order", class: 'btn btn-secondary') %>
     <% end %>
   <% else %>
-    <table class="table table-striped collection-highlights">
-      <tbody>
-        <%= form_for [main_app, @featured_collection_list] do |f| %>
+    <div class="container-fluid">
+      <%= form_for [main_app, @featured_collection_list] do |f| %>
+        <div class="row">
           <%= f.fields_for :featured_collections do |featured| %>
             <%= render 'explore_collections', f: featured %>
           <% end %>
-        <% end %>
-      </tbody>
-    </table>
+        </div>
+      <% end %>
+    </div>
   <% end %>
 </div>
-  <ul class="list-inline collection-highlights-list">
-    <li>
-      <%= link_to t('hyrax.homepage.admin_sets.link'),
-                  main_app.search_catalog_path(f: { generic_type_sim: ["Collection"]}),
-                  class: 'btn btn-secondary mt-1' %>
-    </li>
-  </ul>
+<ul class="list-inline collection-highlights-list">
+  <li>
+    <%= link_to t('hyrax.homepage.admin_sets.link'),
+                main_app.search_catalog_path(f: { generic_type_sim: ["Collection"]}),
+                class: 'btn btn-secondary mt-1' %>
+  </li>
+</ul>

app/views/themes/neutral_repository/hyrax/homepage/_explore_collections.html.erb

@@ -1,7 +1,7 @@
 <% # April's note: overriding Hyrax v5.0.0rc2 template for client theming %>
 
 <% featured_collection = f.object.presenter %>
-<div class="neutral-repository-collections pb-3 col-6 col-md-4">
+<div class="neutral-repository-collections col-6 col-md-4">
   <%= link_to [hyrax, featured_collection] do %>
     <%= render_thumbnail_tag(featured_collection, { class: "img-fluid", alt: "#{featured_collection.title.first} #{ t('hyrax.homepage.admin_sets.thumbnail')}" }, {suppress_link: true}) %>
   <% end %>