Fix slack webhook to report submission type
Fix slack webhook to report submission type

pyvec/cz.pycon.org-2016,benabraham/cz.pycon.org-2017,pyvec/cz.pycon.org-2017,benabraham/cz.pycon.org-2017,pyvec/cz.pycon.org-2016,benabraham/cz.pycon.org-2017,pyvec/cz.pycon.org-2017,pyvec/cz.pycon.org-2017,pyvec/cz.pycon.org-2016