remove x-ua-compatible header

Google Chrome Frame is dead and a HTML5 doctype does the same as
IE=edge.
It also had to be in the first and not the second line.

Source:
https://msdn.microsoft.com/en-us/library/jj676915%28v=vs.85%29.aspx

Author: cremno

_includes/header.html

@@ -1,5 +1,4 @@
         <meta charset="utf-8">
-        <meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1">
 
         <title>{{ page.title }}</title>