deactivate googleearth for user using IE10+

because GoogleEarth plugin is not natively compatible with IE10+ and we are forcing the IE compatiblity mode, making impossible to have the GoogleEarth plugin working correctly in IE10+
Ext detect IE11 as IE10, 
I suspect because of the X-UA-Compatible IE=EmulateIE10
of course we will have to keep an eye open in case M$ release IE12 before we replace completely this plugin.