Wrap notifications HTML code into a block

This block is override in error pages to be none and do not show
notifications on these pages.

readthedocs/templates/401.html

@@ -10,6 +10,8 @@
   {% include "error_header.html" %}
 {% endblock %}
 
+{% block notify %}{% endblock %}
+
 {# Hide the language select form so we don't set a CSRF cookie #}
 {% block language-select-form %}{% endblock %}
 

readthedocs/templates/404.html

@@ -10,6 +10,8 @@
   {% include "error_header.html" %}
 {% endblock %}
 
+{% block notify %}{% endblock %}
+
 {# Hide the language select form so we don't set a CSRF cookie #}
 {% block language-select-form %}{% endblock %}
 

readthedocs/templates/500.html

@@ -9,6 +9,8 @@
   {% include "error_header.html" %}
 {% endblock %}
 
+{% block notify %}{% endblock %}
+
 {# Hide the language select form so we don't set a CSRF cookie #}
 {% block language-select-form %}{% endblock %}
 

readthedocs/templates/base.html

@@ -84,6 +84,8 @@
     <div id="content">
       <div class="wrapper">
 
+        <!-- BEGIN notify -->
+        {% block notify %}
           {% if messages %}
             <ul class="notifications">
               {% for message in messages %}
@@ -93,6 +95,8 @@
               {% endfor %}
             </ul>
           {% endif %}
+        {% endblock %}
+        <!-- END notify -->
 
         {% block content-header %}
         {% endblock %}