- Adds ubus module to nginx
- Select module by default
- Adds script to detect ubus module and append config for luci
- Switch all external module to xz

Signed-off-by: Ansuel Smith <ansuelsmth@gmail.com>

Currently the uci-defaults scripts reset nginx config even it they are valid due to a bug in the if condition.

Signed-off-by: Ansuel Smith <ansuelsmth@gmail.com>

This adds an additional file for ngix that contains all the files need to make luci works on the nginx webserver.

Signed-off-by: Ansuel Smith <ansuelsmth@gmail.com>