Fix pound symbol not displaying properly for post categories and tags

Fixes #2156

_includes/category-list.html

@@ -10,14 +10,14 @@
     <!-- Sort alphabetically regardless of case e.g. a B c d E -->
     <!-- modified from http://www.codeofclimber.ru/2015/sorting-site-tags-in-jekyll/ -->
   {% endcomment %}
-  {% capture page_categories %}{% for category in page.categories %}{{ category | downcase }}#{{ category }}{% unless forloop.last %},{% endunless %}{% endfor %}{% endcapture %}
+  {% capture page_categories %}{% for category in page.categories %}{{ category | downcase }}|{{ category }}{% unless forloop.last %},{% endunless %}{% endfor %}{% endcapture %}
   {% assign category_hashes = page_categories | split: ',' | sort %}
 
   <p class="page__taxonomy">
     <strong><i class="fas fa-fw fa-folder-open" aria-hidden="true"></i> {{ site.data.ui-text[site.locale].categories_label | default: "Categories:" }} </strong>
     <span itemprop="keywords">
     {% for hash in category_hashes %}
-      {% assign keyValue = hash | split: '#' %}
+      {% assign keyValue = hash | split: '|' %}
       {% capture category_word %}{{ keyValue[1] | strip_newlines }}{% endcapture %}
       <a href="{{ category_word | slugify | prepend: path_type | prepend: site.category_archive.path | relative_url }}" class="page__taxonomy-item" rel="tag">{{ category_word }}</a>{% unless forloop.last %}<span class="sep">, </span>{% endunless %}
     {% endfor %}

_includes/tag-list.html

@@ -10,14 +10,14 @@
     <!-- Sort alphabetically regardless of case e.g. a B c d E -->
     <!-- modified from http://www.codeofclimber.ru/2015/sorting-site-tags-in-jekyll/ -->
   {% endcomment %}
-  {% capture page_tags %}{% for tag in page.tags %}{{ tag | downcase }}#{{ tag }}{% unless forloop.last %},{% endunless %}{% endfor %}{% endcapture %}
+  {% capture page_tags %}{% for tag in page.tags %}{{ tag | downcase }}|{{ tag }}{% unless forloop.last %},{% endunless %}{% endfor %}{% endcapture %}
   {% assign tag_hashes = page_tags | split: ',' | sort %}
 
   <p class="page__taxonomy">
     <strong><i class="fas fa-fw fa-tags" aria-hidden="true"></i> {{ site.data.ui-text[site.locale].tags_label | default: "Tags:" }} </strong>
     <span itemprop="keywords">
     {% for hash in tag_hashes %}
-      {% assign keyValue = hash | split: '#' %}
+      {% assign keyValue = hash | split: '|' %}
       {% capture tag_word %}{{ keyValue[1] | strip_newlines }}{% endcapture %}
       <a href="{{ tag_word | slugify | prepend: path_type | prepend: site.tag_archive.path | relative_url }}" class="page__taxonomy-item" rel="tag">{{ tag_word }}</a>{% unless forloop.last %}<span class="sep">, </span>{% endunless %}
     {% endfor %}