Fix "ReferenceError: app is not defined"
Fix "ReferenceError: app is not defined"

codedust/gluon-firmware-wizard,freifunk-bielefeld/firmware-wizard,freifunk-darmstadt/gluon-firmware-wizard,codedust/gluon-firmware-wizard,freifunk-bielefeld/firmware-wizard,codedust/gluon-firmware-wizard,freifunk-darmstadt/gluon-firmware-wizard,freifunk-darmstadt/gluon-firmware-wizard