[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

Also add French translation strings.

Using the new template, update all the translations. The French
translation has also been reviewed.

Some strings were hardcoded in English; make them translatable and add
them to the translation template.

Updates all translations based on the new po/templates/luci-fw.pot.

The luci-fw application was lacking some important description strings.
This adds them and updates the associated translation template.

This patch refreshes the translation files with the new strings and
updates the French translation.

This patch adds the description strings for QoS and updates the
translation template.