Move the endpoint deprecation warning out of base.html

This is part 1 of the removal of awx/templates/rest_framework/base.html.

awx/templates/rest_framework/api.html

@@ -48,6 +48,15 @@
   </div>
 {% endblock %}
 
+{% block content %}
+  {% if deprecated %}
+    <div class="breadcrumb" style="background: #FCC;">
+        <b>This resource has been deprecated and will be removed in a future release.</b>
+    </div>
+  {% endif %}
+{{ block.super }}
+{% endblock content %}
+
 {% block script %}
 <div id="footer">
   <div class="container">

awx/templates/rest_framework/base.html

@@ -73,11 +73,6 @@
 
         <!-- Content -->
         <div id="content" role="main" aria-label="{% trans "content" %}">
-          {% if deprecated %}
-            <div class="breadcrumb" style="background: #FCC;">
-                <b>This resource has been deprecated and will be removed in a future release.</b>
-            </div>
-          {% endif %}
           {% block content %}
 
           <div class="region"  aria-label="{% trans "request form" %}">