Fix IE Download via SSL bug and fix http file over SSL x-sendfile bug
Merge branch 'master' of github.com:woothemes/woocommerce into IE_download_fix

Conflicts:
	woocommerce-functions.php
Rework headers fix to only apply on SSL page and with IE8+
Merge pull request #2871 from krbvroc1/IE_download_fix

Fix IE Download via SSL bug and fix http file over SSL x-sendfile bug