cover: tweak styles:

- `optimizeQuality` > `smooth` (CSS language evolution)
- Use `auto` instead of a fixed width.
- Add exceptions for heights and apply them to some previously modified templates.
- Remove `is-large` exception.
- Widen the content column on list curation.

bookwyrm/templates/lists/curate.html

@@ -32,10 +32,10 @@
                                 href="{{ book.local_path }}"
                                 aria-hidden="true"
                             >
-                                {% include 'snippets/book_cover.html' with cover_class='is-small' %}
+                                {% include 'snippets/book_cover.html' %}
                             </a>
 
-                            <div class="column is-9-mobile is-10-tablet ml-3">
+                            <div class="column is-10-mobile is-10-tablet ml-3">
                                 {% include 'snippets/book_titleby.html' %}
                             </div>
                         </div>