Add pagination to page admin

- Update blog link in bit-badger theme

src/MyWebLog/themes/admin/page-list.liquid

@@ -1,6 +1,7 @@
 <h2 class="my-3">{{ page_title }}</h2>
 <article>
   <a href="{{ "admin/page/new/edit" | relative_link }}" class="btn btn-primary btn-sm mb-3">Create a New Page</a>
+  {%- assign page_count = pages | size -%}
   <table class="table table-sm table-hover">
     <thead>
       <tr>
@@ -10,7 +11,6 @@
       </tr>
     </thead>
     <tbody>
-      {%- assign page_count = pages | size -%}
       {% if page_count > 0 %}
         {% for pg in pages -%}
           <tr>
@@ -43,6 +43,22 @@
       {% endif %}
     </tbody>
   </table>
+  {% if page_nbr > 1 or page_count == 25 %}
+    <div class="d-flex justify-content-evenly">
+      <div>
+        {% if page_nbr > 1 %}
+          {%- capture prev_link %}admin/pages{{ prev_page }}{% endcapture -%}
+          <p><a class="btn btn-default" href="{{ prev_link | relative_link }}">&laquo; Previous</a></p>
+        {% endif %}
+      </div>
+      <div class="text-right">
+        {% if page_count == 25 %}
+          {%- capture next_link %}admin/pages{{ next_page }}{% endcapture -%}
+          <p><a class="btn btn-default" href="{{ next_link | relative_link }}">Next &raquo;</a></p>
+        {% endif %}
+      </div>
+    </div>
+  {% endif %}
   <form method="post" id="deleteForm">
     <input type="hidden" name="{{ csrf.form_field_name }}" value="{{ csrf.request_token }}">
   </form>