Adding backoff action
Minor fixes
Merge branch 'master' into other_backoff

Conflicts:
	alex/applications/PublicTransportInfoCS/hdc_policy.py
Have changed slots? -> State changed?
Merge branch 'other_backoff' of github.com:UFAL-DSG/alex into other_backoff

Conflicts:
	alex/applications/PublicTransportInfoCS/hdc_policy.py
Merge branch 'other_backoff'