Rewrite settings tabs for more readability

[Ssionn]

No images needed, looks the same, different code.

[PovilasKorop]

@Ssionn I don't know, I don't like the naming x-tab it's very generic. These things are not actually tabs, these are links. So maybe x-settings-link? But then you might want to use them elsewhere in the future, outside settings?

Not sure, in general I'm not a big fan of creating components that are used only on this one page and probably nowhere else.

For me personally, that <a class is readable, I don't see a problem here.

But thanks for the effort!