Link from project source to main dataset

[mdoering]

It is quite hard to get to the main dataset from a project source page like https://www.checklistbank.org/catalogue/3/dataset/1021/metadata

There should be a direct link somewhere. Maybe even the title/logo in the header so its avail in all subpages?

For the source metadata page is also doesnt make much sense to show the "Contributes to" bit at the bottom - but it doesnt really hurt either.

[mdoering]

link is added via the alias if given. If not there wont be a link

[mdoering]

@thomasstjerne my patch only works for projects, but not on releases.
Can we please make the alias link work for releases as well?

https://www.checklistbank.org/dataset/292011/source/2207