Fixes invalid/improper microdata and attribute values in the header logo

lms/templates/navigation-edx.html

@@ -39,10 +39,9 @@ site_status_msg = get_site_status_msg(course_id)
 <header class="${"global slim" if course and not disable_courseware_header else "global-new"}" aria-label="Main" role="banner">
   <div class="${'rwd ' if responsive else ''}wrapper-header nav-container">
     <h1 class="logo" itemscope="" itemtype="http://schema.org/Organization">
-      <a href="${marketing_link('ROOT')}" title="Home page" itemprop="url">
+      <a href="${marketing_link('ROOT')}" itemprop="url">
         <%block name="navigation_logo">
-            <img src="${static.url(branding.get_logo_url())}" alt="${platform_name()}" title="${platform_name()}" itemprop="url" />
-            <span class="sr">${_("Home Page")}</span>
+            <img src="${static.url(branding.get_logo_url())}" alt="${_("{platform_name} Home Page").format(platform_name=platform_name())}" itemprop="logo" />
         </%block>
       </a>
     </h1>

lms/templates/navigation.html

@@ -42,7 +42,7 @@ site_status_msg = get_site_status_msg(course_id)
     <h1 class="logo">
       <a href="${marketing_link('ROOT')}">
         <%block name="navigation_logo">
-            <img src="${static.url(branding.get_logo_url())}" alt="${platform_name()}"/>
+            <img src="${static.url(branding.get_logo_url())}" alt="${_("{platform_name} Home Page").format(platform_name=platform_name())}"/>
         </%block>
       </a>
     </h1>

lms/templates/ux/reference/teams-base.html

@@ -15,10 +15,9 @@ Teams | Course name
 <header class="global slim" aria-label="Main" role="banner">
   <div class="wrapper-header nav-container">
     <h1 class="logo" itemscope="" itemtype="http://schema.org/Organization">
-      <a href="/" title="Home page" itemprop="url">
+      <a href="/" itemprop="url">
 
-            <img src="/static/images/edx-theme/edx-logo-77x36.png" alt="Your Platform Name Here" title="Your Platform Name Here" itemprop="url" />
-            <span class="sr">Home Page</span>
+            <img src="/static/images/edx-theme/edx-logo-77x36.png" alt="Your Platform Name Here Home Page" itemprop="logo" />
 
       </a>
     </h1>

lms/templates/ux/reference/teams-create.html

@@ -14,10 +14,9 @@ Create New Team | [Course name]
 <header class="global slim" aria-label="Main" role="banner">
   <div class="wrapper-header nav-container">
     <h1 class="logo" itemscope="" itemtype="http://schema.org/Organization">
-      <a href="/" title="Home page" itemprop="url">
+      <a href="/" itemprop="url">
 
-            <img src="/static/images/edx-theme/edx-logo-77x36.png" alt="Your Platform Name Here" title="Your Platform Name Here" itemprop="url" />
-            <span class="sr">Home Page</span>
+            <img src="/static/images/edx-theme/edx-logo-77x36.png" alt="Your Platform Name Here Home Page" itemprop="logo" />
 
       </a>
     </h1>

themes/red-theme/lms/templates/header.html

@@ -43,7 +43,7 @@ site_status_msg = get_site_status_msg(course_id)
     <h1 class="logo">
       <a href="${marketing_link('ROOT')}">
         <%block name="navigation_logo">
-            <img src="${static.url("images/logo.png")}" alt="${platform_name()}"/>
+            <img src="${static.url("images/logo.png")}" alt="${_("{platform_name} Home Page").format(platform_name=platform_name())}"/>
         </%block>
       </a>
     </h1>