added page titles to both intermediate action templates

whats-open/api/templates/bulk_schedules_intermediate.html

 {% extends "admin/base_site.html" %}
 
+{% block title %}
+Set main schedule for multiple facilities
+{{ block.super }}
+{% endblock %}
+
 {% block breadcrumbs %}
 <div class="breadcrumbs">
   <a href="{% url 'admin:index' %}">Home</a>

whats-open/api/templates/bulk_special_schedules_intermediate.html

 {% extends "admin/base_site.html" %}
 
+{% block title %}
+Add special schedule to multiple facilities
+{{ block.super }}
+{% endblock %}
+
 {% block breadcrumbs %}
 <div class="breadcrumbs">
   <a href="{% url 'admin:index' %}">Home</a>