In [#131] I added a check that ensures that the section in `Cargo.toml`
(and there values) are in a specific order. I invented the order quite
randomly, in the order which I thought might be useful.
This PR changes the order to be the same as in Cargo's reference about
[The Manifest Format]. Also some missing softlinks were added.
[#131]: <https://github.com/rinja-rs/rinja/pull/131>
[The Manifest Format]: <https://doc.rust-lang.org/cargo/reference/manifest.html>
