Change log renders above previously opened view component

[tarnung]

Recently the changelog acts strangely for me.
I had cases where the changelog showed up double. The view started out scrolled somewhere into the middle of the changelog and as i scrolled down to the start of the history it repeated (again showing "general" and the whole change log beneath it).
Now i discovered an even stranger bug. I opened the change log from the settings menu and the change log again started scrolled down quite a bit. As i scrolled past the end i scrolled into the settings menu which was still there below the change log.

The bug is reproducible. It happens every time i open the changelog from the settings menu
I observed this on my android phone and in the desktop browser.

The starting scrolled down part is probably due to the browser keeping its scroll position since it does not load a new view but prepends the changelog to whatever view is shown already.

[munen]

Confirmed. That's a pretty ugly bug, too.

Additionally, the changelog shows up double for me from the "files" view, as well.

I propose fixing it by getting rid of the concept 'modal' for changelogs in the sense that it would be nice to have proper routes wherever we can.

[munen]

I have created a PR. Sample and Changelog now only work with their own routes /sample and /changelog. There's no weird 'modal logic' that puts stuff on top of stuff.

If you would like to review it, that would be nice. If you like it, please go ahead and merge it.