Update text in LMS footer as per legal

[OPEN-444]

lms/templates/footer-edx-new.html

@@ -30,10 +30,15 @@
       </div>
 
       <div class="footer-about-copyright">
-        ## Translators: '&copy;' is an HTML character code for the copyright symbol. Please don't remove or change it.
-        <p>${_("&copy; {copyright_year} {platform_name}, some rights reserved").format(
-          platform_name=settings.PLATFORM_NAME,
-          copyright_year=settings.COPYRIGHT_YEAR
+	## Using "edX Inc." explicitly here for copyright purposes (settings.PLATFORM_NAME is just "edX", and this footer is only used on edx.org)
+	<p>&copy; ${settings.COPYRIGHT_YEAR} edX Inc.</p>
+
+	## Site operators: Please do not remove this paragraph! This attributes back to edX and makes your acknowledgement of edX's trademarks clear.
+	<p>
+	  ## Translators: 'EdX', 'edX', and 'Open edX' are trademarks of 'edX Inc.'. Please do not translate any of these trademarks and company names.
+	  ${_("EdX, Open edX, and the edX and Open edX logos are registered trademarks or trademarks of {link_start}edX Inc.{link_end}").format(
+	      link_start=u"<a href='https://www.edx.org/'>",
+	      link_end=u"</a>"
 	  )}
 	</p>
       </div>

lms/templates/footer.html

@@ -51,10 +51,14 @@
         </p>
       </div>
 
-      ## Translators: '&copy;' is an HTML character code for the copyright symbol. Please don't remove or change it.
-      <p class="copyright">${_("&copy; {copyright_year} {platform_name}, some rights reserved").format(
-        platform_name=settings.PLATFORM_NAME,
-        copyright_year=settings.COPYRIGHT_YEAR
+      <p class="copyright">&copy; ${settings.COPYRIGHT_YEAR} ${settings.PLATFORM_NAME}.</p>
+
+      ## Site operators: Please do not remove this paragraph! This attributes back to edX and makes your acknowledgement of edX's trademarks clear.
+      <p class="copyright">
+	## Translators: 'EdX', 'edX', and 'Open edX' are trademarks of 'edX Inc.'. Please do not translate any of these trademarks and company names.
+	${_("EdX, Open edX, and the edX and Open edX logos are registered trademarks or trademarks of {link_start}edX Inc.{link_end}").format(
+	    link_start=u"<a href='https://www.edx.org/'>",
+	    link_end=u"</a>"
 	)}
       </p>
         <nav class="nav-legal">