Update public/content/content.json, public/imgs/thumbnails/Sensoren4iCity_3.png, public/imgs/thumbnails/NeuLand Sensor.jpg

Update public/imgs/thumbnails/icity1-SDG.png, public/imgs/thumbnails/SPB-SDG.png, public/imgs/thumbnails/ICT4ICITY-SDG.png, public/imgs/thumbnails/Sensim4ICITY-SDG.png, public/imgs/thumbnails/UDigit4ICITY-SDG.png, public/imgs/thumbnails/SDG-pres.png

Update public/imgs/thumbnails/E-WEB-Goal-04.png, public/imgs/thumbnails/E-WEB-Goal-07.png, public/imgs/thumbnails/E-WEB-Goal-09.png, public/imgs/thumbnails/E-WEB-Goal-13.png, public/imgs/thumbnails/E-WEB-Goal-06.png, public/imgs/thumbnails/E-WEB-Goal-17.png