Allow fetching organizational repositories

[MarkusAmshove]

This PR fixes the issue about fetching organizational repositories for me.

This way the user doesn't have to be an administrator.

[zopanix]

@stephenc : Can anyone review this ? This feature is quite important for larger organizations. I don't want my CI to be a gitea administrator to be able to fetch repositories of an organization

[rayitopy]

Is this going to be released?

[stephenc]

All things are possible. I want to check some other things against the “are we ready for tags” question later today first

[rayitopy]

Ok, thank you.

[lafriks]

@stephenc we are not fully ready for tags yet. I have tags listing API but no API to get tag info

[stephenc]

@lafriks

[stephenc]

@lafriks will /repos/{owner}/{repo}/git/refs/{ref} not work for tags?

[lafriks]

It will but it will return only ref name and commit

[lafriks]

But keep in mind for refs/tags/v1.0 it could return also refs/tags/v1.0-rc1 etc as it returns everything starting with provided argument.

For example: https://try.gitea.io/api/v1/repos/lafriks/vscode/git/refs/tags/0.10.11

And also same trick as in github git/refs API can return both array or just object for single match:
https://try.gitea.io/api/v1/repos/lafriks/vscode/git/refs/tags/0.10.11-insiders