F 344 extern linkify absorbs commas etc into link adress

Summary

The cosmetics.linkify module has been changed to be more robust when detecting URLs. This addresses in particular issue #344 (closed), but now also correctly handles ports.

This merge request also adds some more info on running the unit tests, in particular adding dependencies and info on WSL (#346 (closed)).

Focus

All important changes are in caosdb-webui/src/core/js/ext_cosmetics.js and the corresponding unit tests in coasdb-webui/test/core/js/modules/ext_cosmetics.js.js.

Test Environment

How to set up a test environment for manual testing?

See README_SETUP.md (updated in this branch).

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