Revert "Revert "- deutsch.locale: add locales for wlan scan""

This reverts commit a4f3d71cdb55befe284540bc8dd4ccfaef36aa81.
Revert "Revert "src/gui/network_setup.cpp: add wlan scan""

This reverts commit 6bdfac508a1229ae79775b3852781d34b380c13e.
Revert "Revert "locals: add locales for wlan scan""

This reverts commit 10122876afe8ebbff9e50cb3ef619e648c2479ed.
Revert "Revert "add libiw to build""

This reverts commit e9229834ed2f6562d1212a6cd706ca4ce02a8c76.
Revert "Revert "lib/libiw: add libiw from wireless tools v29, and wrapper to scan wlan networks""

This reverts commit fa3d6857233e84f4cefb6f402853928c05ae17d0.