"Supported Versions" section is still required

[hexauni]

Please, return the "Supported versions" section, which was recently removed. Here're a few cases I've found that make it still useful:

• To see if an extension is orphaned, or if you just need to wait for a new compatible version. It's useful for both installed extensions and when you're looking for a new one
• For developers: to decide whether to contribute for an extension or it takes too much time, depending of how old the extension code is
• To see how often an extension has been updated (are there some gaps between versions or not) to decide if the extension is well-supported
• Some people may have multiple devices with different gnome versions and need to see if an extension supports all of them

Related issues: #604

[mjakeman]

FYI: You can currently access the same info using the Download: Shell version dropdown on the extensions website:

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Yep, fair enough.

I don't think it's very useful information to have on the browse page, but I'd be alright with adding it back as a dialog which pops up when you click on "Versions" on the browse page.

I'm thinking something along these lines: