download: Updating layout of download pages

[cwhite911]

Updating the download UI/UX to increase accessibility to new users as part of issue #414.

[cwhite911]

These are still a WIP, but here are some examples of how the download pages can be updated.

Windows

Mac

I'm planning an Additional Options section below the main download button to capture more of the information from the current pages.

[veroandreo]

I like the pink Support Us button ❤️

[pesekon2]

In content/download/docker.en.md, it says that the main docker images are GRASS GIS 8.4.0 (preview). However, the main images are currently 8.5.0. Shall we avoid this bamboozling situation by avoiding the numbers in the title? Saying something like GRASS GIS developer's preview version or something shorter, better?

[neteler]

In content/download/docker.en.md, it says that the main docker images are GRASS GIS 8.4.0 (preview). However, the main images are currently 8.5.0.

@pesekon2 pls see https://grass.osgeo.org/download/docker/ - to me it looks sufficiently clear.

(the versions are managed in this central JSON file, maybe not yet perfectly used...)

[pesekon2]

In content/download/docker.en.md, it says that the main docker images are GRASS GIS 8.4.0 (preview). However, the main images are currently 8.5.0.

@pesekon2 pls see https://grass.osgeo.org/download/docker/ - to me it looks sufficiently clear.

(the versions are managed in this central JSON file, maybe not yet perfectly used...)

@neteler: I think my comment is outdated. It was in times when 8.4.0 was marked preview on the webpage you linked (thus the phrase in my comment -- GRASS GIS 8.4.0 (preview)). Last time I pulled from that, the version inside the docker was actually 8.5.0. Now the versions seem to be corresponding. I probably hit some window when those versions were not corresponding. Everything is fine now.