[applications] luci-multiwan: Changed ListValue to Value for protocols, updated text in po for ports and protocols

Thanks to Teow Wai Chet for the initial translation.

dns server settings

	- skip client side field validation if corrsponding field was removed due to dependencies
	- human readable error strings in uci section summary
	- implement field validation for dnyamic lists
	- render optional fields when section has tabs

applications/luci-wol: handle command execution in write hook and use message facility to output info