Merge pull request #70 from truepl/master

normal & lightning
fix: Gregory name
fix: agenda icons
Merge pull request #71 from polyconf/fix/agenda-icons

fix: agenda icons
improv: switch Garret <-> Adam D.
improv: adjust agenda
Merge pull request #72 from polyconf/improv/agenda

improv: adjust agenda
feature: remove lieke and add Ute and magda
Merge pull request #73 from AdrienGiboire/master

feature: remove lieke and add Ute and magda
remove: specific dev env config files
Merge pull request #74 from AdrienGiboire/master

remove: specific dev env config files
fix: text color for hotels section
feature: add picto for normal talks
fix: margin for venue section
feature: complete agenda
Merge pull request #76 from AdrienGiboire/master

fullfil agenda
Conflicts