Add X-UA-Compatible header
Add X-UA-Compatible header

in situations where IE11 fails to detect the "document mode" correctly,
this header should ensure that IE uses the "edge" mode.

(this probably doesn't help in any case where IE11 is set to force IE7 mode)

Fixes https://bugzilla.redhat.com/show_bug.cgi?id=1648338

ManageIQ/manageiq-ui-classic,ManageIQ/manageiq-ui-classic,ManageIQ/manageiq-ui-classic,ManageIQ/manageiq-ui-classic