Qdata group webpage

Built from Minimal Mistakes Jekyll theme
the whole structure of this site is adpated from MM docs folder
two folders are the most imporant from above:
- _page
- _post
I adapt and revise the _page by adding our legacy sites / each site with a special _page folder to organize their posts.
Team, for any changes you prefer to add, please fork and PR! Before PR, please make sure everything works fine locally
- (Local build via running bundle exec jekyll serve)
ToDo: gallery for member photos

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