make event list more compact on mobile

[marcelkalveram]

This is a relatively simple, initial approach to making the mobile site more compact.

I didn't let the image float next to the title because I think it gives the title too little space. Especially with longer titles, they'll wrap to the next line, making it look more awkward.

Happy to hear your suggestions to improve this further.

Here are two screenshots for preview:

iPhone X: https://www.dropbox.com/s/tub1pb849kkzz12/Screenshot%202019-10-08%2022.57.51.png?dl=0

Pixel XL: https://www.dropbox.com/s/9pdtgor68vlauyr/Screenshot%202019-10-08%2022.58.04.png?dl=0