Update html-presentation-template.php : add META header for IE 9+ compatibility mode


If Wordpress is in intranet zone, and IE 9+ is configured to display all intranet sites in compatibility mode, the slides are displayed like in IE6. The META header forces IE to use modern rendering (needed for html5).
Merge pull request #1 from fabienbancharel/master

Update html-presentation-template.php : add META header for IE 9+ compat...