Add page titles to API admin pages.

ECOM-4264

lms/templates/api_admin/status.html

 ## mako
 <%page expression_filter="h"/>
 <%inherit file="../main.html"/>
-<%
+<%!
 from django.utils.translation import ugettext as _
 
 from openedx.core.djangoapps.api_admin.models import ApiAccessRequest
 from openedx.core.djangolib.markup import HTML, Text
 %>
 
+<%block name="pagetitle">
+${_("API Access Request Status")}
+</%block>
+
 <div id="api-access-wrapper">
   <h1 id="api-header">${_("{platform_name} API Access Request").format(platform_name=settings.PLATFORM_NAME)}</h1>
   <div class="request-status request-${status}">

lms/templates/api_admin/terms_of_service.html

 ## mako
 <%page expression_filter="h"/>
 <%inherit file="../main.html"/>
-<%
+<%!
 from django.core.urlresolvers import reverse
 from django.utils.translation import ugettext as _
 %>
 
+<%block name="pagetitle">${_("API Terms of Service")}</%block>
+
 <div id="api-access-wrapper">
   <h1 id="api-header">${_("Terms of Service for {platform_name} APIs").format(platform_name=settings.PLATFORM_NAME)}</h1>
   <h2 class="api-subheading">${_("Effective Date: April 12th, 2016")}</h2>