Very difficult to zoom in and out on mobile

[sircinnamon]

Because the board captures touch events, zooming in is difficult on mobile.

[sircinnamon]

Removed zoom on mobile in 8ef5c1b as you could zoom in and become unable to pan/zoom out. Unsure if zoom is even required on mobile.

[sircinnamon]

Lighthouse calls the zoom lock an accessibility violation, although a minor one