WIP Feature/views transition api

[Kilian]

Initial work for #52

Things to do:

• Fallback to old behavior when views transition api is not available
• Animate in the dialog wrapper/container itself without fading out the image inside it
• closing animation
• works on all pages
• Prevent scrolling back to top
• Prevent page being scrollable when dialog is opened
• Staggered animation
• Works with multiple images on a page (requires unique names in CSS to support this)

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strangely, it works fine on e.g. http://localhost:8080/tips/en/see-json-responses/ but breaks on http://localhost:8080/tips/en/disable-abusive-debugger-statement/

[captainbrosset]

This is super exciting! Thanks for this initial work. Let me know when you think this is ready for review/merging.

[Kilian]

Using it is quite rough still, but I'm getting there. Lots of visual artifacts.

[Kilian]

Found the draft button!

[Kilian]

I'm gonna close this out. As cool as it is, there's too many rough edges that I don't understand why they work the way they do. Maybe we can revisit it in the future.

[captainbrosset]

Ok, sounds good. Thanks, Kilian, for taking the time to investigate, and use this as a way to report feedback about the API too.