use slash instead of empty string for absolute url, try to fix links …

…in 'jekyll build'

_includes/footer-minimal.html

@@ -12,7 +12,7 @@
 
     {% if site.url-pretty %}
         •  
-      <a href="{{ '' | absolute_url }}">{{ site.url-pretty }}</a>
+      <a href="{{ '/' | absolute_url }}">{{ site.url-pretty }}</a>
     {% endif %}
   </div>
 </footer>

_includes/footer.html

@@ -20,7 +20,7 @@
       {% if site.url-pretty %}
          • 
         <span class="author-site">
-          <a href="{% if site.url-canonical %}{{ site.url-canonical }}{% else %}{{ '' | absolute_url }}{% endif %}">{{ site.url-pretty }}</a>
+          <a href="{% if site.url-canonical %}{{ site.url-canonical }}{% else %}{{ '/' | absolute_url }}{% endif %}">{{ site.url-pretty }}</a>
         </span>
       {% endif %}
 

_includes/nav.html

@@ -1,9 +1,9 @@
 <nav class="navbar navbar-expand-xl navbar-light fixed-top navbar-custom {% if page.nav-short %}top-nav-short-permanent{% else %}top-nav-regular{% endif %}">
 
   {%- if site.title-img -%}
-    <a class="navbar-brand navbar-brand-logo" href="{{ '' | absolute_url }}"><img alt="{{ site.title }} Logo" src="{{ site.title-img | relative_url}}"/></a>
+    <a class="navbar-brand navbar-brand-logo" href="{{ '/' | absolute_url }}"><img alt="{{ site.title }} Logo" src="{{ site.title-img | relative_url}}"/></a>
   {%- elsif site.title -%}
-    <a class="navbar-brand" href="{{ '' | absolute_url }}">{{ site.title }}</a>
+    <a class="navbar-brand" href="{{ '/' | absolute_url }}">{{ site.title }}</a>
   {%- endif -%}
 
   <button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#main-navbar" aria-controls="main-navbar" aria-expanded="false" aria-label="Toggle navigation">
@@ -50,7 +50,7 @@
   {% if site.avatar and page.show-avatar != false %}
     <div class="avatar-container">
       <div class="avatar-img-border">
-        <a href="{{ '' | absolute_url }}">
+        <a href="{{ '/' | absolute_url }}">
           <img alt="Navigation bar avatar" class="avatar-img" src="{{ site.avatar | relative_url }}" />
         </a>
       </div>

feed.xml

@@ -10,7 +10,7 @@ layout: null
     {% if site.rss-description %}
     <description>{{ site.rss-description | xml_escape }}</description>
     {% endif %}
-    <link>{{ '' | absolute_url }}</link>
+    <link>{{ '/' | absolute_url }}</link>
     <atom:link href="{{ 'feed.xml' | absolute_url }}" rel="self" type="application/rss+xml" />
     {% assign excerpt_length = site.excerpt_length | default: 50 %}
     {% for post in site.posts limit:20 %}