Adds abstract and more speaker information to guidebook export
Adds abstract and more speaker information to guidebook export

zerok/pyconde-website-mirror,pysv/djep,pysv/djep,zerok/pyconde-website-mirror,EuroPython/djep,pysv/djep,EuroPython/djep,pysv/djep,EuroPython/djep,zerok/pyconde-website-mirror,EuroPython/djep,pysv/djep