Add breadcrumb to improve navigation

profiles/templates/profiles/base.html

+{% extends 'scipost/base.html' %}
+
+{% block breadcrumb %}
+    <div class="container-outside header">
+        <div class="container">
+            <nav class="breadcrumb hidden-sm-down">
+                {% block breadcrumb_items %}
+                    <a href="{% url 'profiles:profiles' %}" class="breadcrumb-item">Profiles</a>
+                {% endblock %}
+            </nav>
+        </div>
+    </div>
+{% endblock %}

profiles/templates/profiles/profile_confirm_delete.html

-{% extends 'scipost/base.html' %}
+{% extends 'profiles/base.html' %}
 
 {% load bootstrap %}
 
+{% block breadcrumb_items %}
+    {{ block.super }}
+    <span class="breadcrumb-item">Delete {{ profile }}</span>
+{% endblock %}
+
 {% block pagetitle %}: Delete Profile{% endblock pagetitle %}
 
 {% block content %}

profiles/templates/profiles/profile_form.html

-{% extends 'scipost/base.html' %}
+{% extends 'profiles/base.html' %}
 
 {% load bootstrap %}
 
+{% block breadcrumb_items %}
+    {{ block.super }}
+    <span class="breadcrumb-item">{% if form.instance.id %}Update {{ form.instance }}{% else %}Add new Profile{% endif %}</span>
+{% endblock %}
+
 {% block pagetitle %}: Profiles{% endblock pagetitle %}
 
 {% block content %}

profiles/templates/profiles/profile_list.html

-{% extends 'scipost/base.html' %}
-
-{% load scipost_extras %}
+{% extends 'scipost/_personal_page_base.html' %}
 
 {% load bootstrap %}
 
+{% block breadcrumb_items %}
+    {{ block.super }}
+    <span class="breadcrumb-item">Profiles</span>
+{% endblock %}
+
+{% load scipost_extras %}
+
 {% block pagetitle %}: Profiles{% endblock pagetitle %}
 
 {% block content %}