Collect throwback pictures from actual space

![image](https://user-images.githubusercontent.com/5887929/49751912-01888280-fcaf-11e8-8b71-f57490f12281.png)
[facebook post](https://www.facebook.com/EffectiveAltruismBratislava/photos/a.757811247756393/791822194355298/?type=3&permPage=1)

I would be delighted to see more (funny) pictures from Progressbar, how we evolved through time