Activated the BIO page and naming issue

Created by: flora8984461

This branch checkout out from phkrief:pk/main/u6

Fix #11 (closed)

Hello @phkrief , to fix this, you only need to add layout: single in 2020/december/_index.md.

But please note that I also made some changes to the folder name, because you need to keep the name consistent, otherwise, when you click on speakers' names, it will lead you to the wrong URL.

Since I found all the events are open research webinars, so I just named them as december, you can change the names but please make sure to make them consistent in the two folders for markdown files and data files and also in imageRooter="" & event="".

Thanks!