Controls for pseudonymisation

[stijn-uva]

Fixes #31. Can be merged after 4CAT's next release. The spelling mistake in the branch name is unfortunate.

[stijn-uva]

This is now in principle ready for merging, since the recent 4CAT release has support for this, but there is no way to detect from Zeeschuimer's end whether the 4CAT being uploaded to does or does not support this. So might wait a little longer (until the next release) to ensure more people would be working with the latest version.

[dale-wahl]

Hmmmm. Wonder if we would want something like this in 4CAT:

def api_version():
	"""
	Get 4CAT version information
	"""
	commit, repository = get_software_commit()
        with Path(g.config.get("PATH_ROOT"), "VERSION").open() as infile:
		code_version = infile.readline().strip()
	
	response = {
			"version": get_software_version(),
			"code_version": code_version,
			"commit": commit,
			"repository": repository,
			"branch": get_git_branch(),
		}

	return jsonify(response)

Covers a lot of bases. Could be behind auth same way importing datasets works. Probably need to double check that the repo works always (since if you have a different repo... the version stuff could diverge). Anyway, rough idea, but as 4CAT interacts with more things, it seems useful. Oh... wasn't there already something for the importing datasets from different 4CATs too?