Fix and unify homepage links (#186)

Author: keunes

_includes/breadcrumbs.html

@@ -1,6 +1,6 @@
 <div id="breadcrumbs" class="pb-3">
     {% assign crumbs = page.url | remove:'/index.html' | split: '/' %}
-    <a href="{{ site.baseurl }}">{% t generic.home %}</a>
+    <a href="/{% if site.lang != 'en' %}{{ site.lang }}{% endif %}">{% t generic.home %}</a>
     {% for crumb in crumbs offset: 1 %}
       {% if forloop.last %}
         / {% t page.title %}

_includes/footer.html

@@ -10,7 +10,7 @@
         <div class="container">
             <div class="row pt-2 mb-4 mb-lg-3 justify-content-between">
                 <div class="col-12 col-lg-4 col-md-12 mb-3">
-                    <div class="small mb-4 mb-lg-3"><a href="{% if site.lang == "en" %}/{% else %}{{ site.baseurl }}{% endif %}"><img
+                    <div class="small mb-4 mb-lg-3"><a href="/{% if site.lang != 'en' %}{{ site.lang }}{% endif %}"><img
                                 src="{{ site.baseurl_root }}/assets/logos/logo.png" width="260px" /></a></div>
                     <p class="size-14 color-gray-900 mb-3">{% t footer.description %}</p>
                 </div>

_includes/nav.html

@@ -2,7 +2,7 @@
     <div class="container py-4">
         <div class="navbar navbar-expand-xl justify-content-between">
             <div>
-                <a href="{% if site.lang == "en" %}/{% else %}{{ site.baseurl }}{% endif %}">
+                <a href="/{% if site.lang != 'en' %}{{ site.lang }}{% endif %}">
                     <img class="smallermobile" src="/assets/logos/logo.png" id="mainlogo" />
                 </a>
             </div>