Use optional parameter to set column class

- Fixes the extremely long class name on the post versions view
- Can now use one value instead of having to set th and td
- Added missing column classes on all tables

app/views/artist_versions/_listing.html.erb

@@ -31,7 +31,7 @@
         </p>
       <% end %>
       <% if artist_versions_listing_type == :revert %>
-        <% t.column do |artist_version| %>
+        <% t.column column: "control" do |artist_version| %>
           <%= link_to "Revert to", revert_artist_path(artist_version.artist_id, version_id: artist_version.id), method: :put, "data-confirm": "Are you sure you want to revert to this version?" %>
         <% end %>
       <% end %>