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.

applications/luci-ddns: merge mini and full models, read services from /usr/lib/ddns/services, patch by joda (#99)

modules/admin-{mini,full}: prevent crash in iface overview page if ifconfig does not return information