Move httpd.conf to not store password and instead depend on the shadow password file.
Also tag the 40_aredn_migrate-httpdconf script to be +x. Not strictly necessary but wish to have this standard
Change-Id: I018d9a3294e45af2316b3c3947ef2a7d8081268b
We don't really need any files in there, and keeping the folder can interfere with the programs that populate /etc/aredn_include on firstboot from uci-default.
This will cause the node to boot up in default mode (with an AP on its interface on the default channels) during its first boot, and than very quickly reboot and come up under the mesh.