Inaccessible label for the page action Navigation

<nav> elements for the actions a user can perform on a perticular
page contain inaccessible label whic causes screen reader users
confusion regarding to their current navigation.

TNL-1531

cms/templates/asset_index.html

@@ -37,7 +37,7 @@
             <span class="sr">&gt; </span>${_("Files &amp; Uploads")}
         </h1>
 
-        <nav class="nav-actions">
+        <nav class="nav-actions" aria-label="${_('Page Actions')}">
             <h3 class="sr">${_("Page Actions")}</h3>
             <ul>
                 <li class="nav-item">

cms/templates/container.html

@@ -64,7 +64,7 @@ from django.utils.translation import ugettext as _
             </div>
         </div>
 
-        <nav class="nav-actions">
+        <nav class="nav-actions" aria-label="${_('Page Actions')}">
             <h3 class="sr">${_("Page Actions")}</h3>
             <ul>
                 % if is_unit_page:

cms/templates/course-create-rerun.html

@@ -26,7 +26,7 @@
         <span class="page-header-sub">${_("Create a re-run of a course")}</span>
       </h1>
 
-      <nav class="nav-actions">
+      <nav class="nav-actions" aria-label="${_('Page Actions')}">
         <h3 class="sr">Page Actions</h3>
         <ul>
           <li class="nav-item">

cms/templates/course_info.html

@@ -33,7 +33,7 @@
         <span class="sr">&gt; </span>${_("Course Updates")}
       </h1>
 
-      <nav class="nav-actions">
+      <nav class="nav-actions" aria-label="${_('Page Actions')}">
         <h3 class="sr">${_('Page Actions')}</h3>
         <ul>
           <li class="nav-item">

cms/templates/course_outline.html

@@ -60,7 +60,7 @@ from contentstore.utils import reverse_usage_url
             <span class="sr">&gt; </span>${_("Course Outline")}
         </h1>
 
-        <nav class="nav-actions">
+        <nav class="nav-actions" aria-label="${_('Page Actions')}">
             <h3 class="sr">${_("Page Actions")}</h3>
             <ul>
                 <li class="nav-item">

cms/templates/edit-tabs.html

@@ -33,7 +33,7 @@
       <span class="sr">&gt; </span>${_("Pages")}
     </h1>
 
-    <nav class="nav-actions">
+    <nav class="nav-actions" aria-label="${_('Page Actions')}">
       <h3 class="sr">${_("Page Actions")}</h3>
       <ul>
         <li class="nav-item">

cms/templates/index.html

@@ -17,7 +17,7 @@
     <h1 class="page-header">${_("{studio_name} Home").format(studio_name=settings.STUDIO_SHORT_NAME)}</h1>
 
     % if user.is_active:
-    <nav class="nav-actions">
+    <nav class="nav-actions" aria-label="${_('Page Actions')}">
       <h3 class="sr">${_("Page Actions")}</h3>
       <ul>
         <li class="nav-item">

cms/templates/library.html

@@ -46,7 +46,7 @@ from django.utils.translation import ugettext as _
             </div>
         </div>
 
-        <nav class="nav-actions">
+        <nav class="nav-actions" aria-label="${_('Page Actions')}">
             <h3 class="sr">${_("Page Actions")}</h3>
             <ul>
                 <li class="nav-item">

cms/templates/manage_users.html

@@ -16,7 +16,7 @@
       <span class="sr">&gt; </span>${_("Course Team")}
     </h1>
 
-    <nav class="nav-actions">
+    <nav class="nav-actions" aria-label="${_('Page Actions')}">
       <h3 class="sr">${_("Page Actions")}</h3>
       <ul>
         %if allow_actions:

cms/templates/manage_users_lib.html

@@ -15,7 +15,7 @@
       <span class="sr">&gt; </span>${_("User Access")}
     </h1>
 
-    <nav class="nav-actions">
+    <nav class="nav-actions" aria-label="${_('Page Actions')}">
       <h3 class="sr">${_("Page Actions")}</h3>
       <ul>
         %if allow_actions:

cms/templates/textbooks.html

@@ -38,7 +38,7 @@ CMS.URL.LMS_BASE = "${settings.LMS_BASE}"
         <span class="sr">&gt; </span>${_("Textbooks")}
       </h1>
 
-      <nav class="nav-actions">
+      <nav class="nav-actions" aria-label="${_('Page Actions')}">
         <h3 class="sr">${_("Page Actions")}</h3>
         <ul>
           <li class="nav-item">

cms/templates/ux/reference/container.html

@@ -34,7 +34,7 @@
             </div>
         </div>
 
-        <nav class="nav-actions">
+        <nav class="nav-actions" aria-label="${_('Page Actions')}">
             <h3 class="sr">Page Actions</h3>
             <ul>
 

cms/templates/ux/reference/course-create-rerun.html

@@ -19,7 +19,7 @@
         <span class="page-header-sub">Create a re-run of a course</span>
       </h1>
 
-      <nav class="nav-actions">
+      <nav class="nav-actions" aria-label="${_('Page Actions')}">
         <h3 class="sr">Page Actions</h3>
         <ul>
           <li class="nav-item">

cms/templates/ux/reference/outline.html

@@ -21,7 +21,7 @@ from django.core.urlresolvers import reverse
         <span class="sr">&gt; </span>Course Outline
       </h1>
 
-      <nav class="nav-actions">
+      <nav class="nav-actions" aria-label="${_('Page Actions')}">
         <h3 class="sr">Page Actions</h3>
         <ul>
           <li class="nav-item">

cms/templates/videos_index.html

@@ -41,7 +41,7 @@
             <span class="sr">&gt; </span>${_("Video Uploads")}
         </h1>
 
-        <nav class="nav-actions">
+        <nav class="nav-actions" aria-label="${_('Page Actions')}">
             <h3 class="sr">${_("Page Actions")}</h3>
             <ul>
                 <li class="nav-item">