Adds shelf page

Works on #25

fedireads/templates/snippets/shelf.html

@@ -0,0 +1,61 @@
+{% load humanize %}
+{% load fr_display %}
+{% if shelf.books %}
+<table>
+<tr class="book-preview">
+    <th>
+        Cover
+    </th>
+    <th>
+        Title
+    </th>
+    <th>
+        Author
+    </th>
+    <th>
+        Published
+    </th>
+    <th>
+        Shelved
+    </th>
+    <th>
+        External links
+    </th>
+    {% if ratings %}
+    <th>
+        Rating
+    </th>
+    {% endif %}
+</tr>
+{% for book in shelf.books.all %}
+<tr class="book-preview">
+    <td>
+        {% include 'snippets/book_cover.html' with book=book %}
+    </td>
+    <td>
+        <a href="/book/{{ book.openlibrary_key }}">{{ book.data.title }}</a>
+    </td>
+    <td>
+        {{ book.authors.first.data.name }}
+    </td>
+    <td>
+        {{ book.data.first_publish_date }}
+    </td>
+    <td>
+        {{ book.added_date | naturalday }}
+    </td>
+    <td>
+        <a href="https://openlibrary.org{{ book.data.key }}" target="_blank">OpenLibrary</a>
+    </td>
+    {% if ratings %}
+    <td>
+        {{ ratings | dict_key:book.id | stars}}
+    </td>
+    {% endif %}
+</tr>
+{% endfor %}
+</table>
+{% else %}
+<p>This shelf is empty.</p>
+{% endif %}
+

fedireads/templates/snippets/username.html

@@ -1,2 +1,2 @@
-<a href="/user/{% if user.localname %}{{ user.localname }}{% else %}{{ user.username }}{% endif %}" class="user">{% if user.name %}{{ user.name }}{% elif user.localname %}{{ user.localname }}{% else %}{{ user.username }}{% endif %}</a>
-
+{% load fr_display %}
+<a href="/user/{{ user | username }}" class="user">{% if user.name %}{{ user.name }}{% else %}{{ user | username }}{% endif %}</a>