[fix] ARM build is missing the UI

release/arch/arm/build-arm.sh

@@ -62,7 +62,7 @@ cp -R "$DOWNLOADS/node-${NVER}-linux-${ARCH}" node
 
 echo "npm install"
 node/bin/npm install
-node/bin/npm install duniter-ui@1.4.x
+node/bin/npm install duniter-ui@1.4.x --save
 sed -i "s/duniter\//..\/..\/..\/..\//g" node_modules/duniter-ui/server/controller/webmin.js
 node/bin/npm prune --production
 SRC=`pwd`