Implement Train and Predict on All Semantics in loc.py
Implement Train and Predict on All Semantics in loc.py

- Implement Train and Predict on All Semantics in loc.py
- Fix _wifi_bssid dict keys in loc.py

SoftwareDefinedBuildings/BearLoc,SoftwareDefinedBuildings/BearLoc,SoftwareDefinedBuildings/BearLoc,SoftwareDefinedBuildings/BearLoc