fix for aps.size()<3
bugfix for aps.size()<3
Merge branch 'dev' of https://github.com/tcuje/PraktikumSS13-WLAN-Fingerprint into dev
location update

filtered aps for double accesspoints
GUI improvements
Merge branch 'dev' of https://github.com/tcuje/PraktikumSS13-WLAN-Fingerprint into dev
merged dev into tcuje