semantic hub with google settings
Improved memmory efficiency of DAILR SLU.
Added contxt resolution into ontology, better handling of the bye(act), if user provides a from city, then it does not asks for a to stop but rather for a to city.
Merge branch 'master' of https://github.com/UFAL-DSG/alex
Merge branch 'master' into time_transfers_hdc

Conflicts:
	alex/applications/PublicTransportInfoCS/hdc_slu.py