wifi.lua: Add support for toggling WPS button.

The patch checks the existence of the needed files for the WPS support and if they are present, shows the option to toggle WPS pushbutton settings.

Signed-off-by: Hannu Nyman <hannu.nyman@iki.fi>
Merge pull request #219 from hnyman/WPS-toggle

wifi.lua: Add support for toggling WPS button
Add initial contribution guidelines

Signed-off-by: Jo-Philipp Wich <jow@openwrt.org>
modules/admin-full: add support for configuring mirror port

This adds the LuCI support for setting a mirror port on AR8327 switches.
Patch provided by Colin Leitner <colin.leitner@gmail.com>

Ref: https://dev.openwrt.org/attachment/ticket/10202

Signed-off-by: Jo-Philipp Wich <jow@openwrt.org>