in visitor view

* Greet new contributors

Added a workflow to greet new contributors and first time issuers.

* add Token + msg change

* Change welcome action

* Use official GH action

*insert April ranting about Javascript here*

Fix. Fixed a problem that flagSpeakAsCat and flagSpeakAsCatDescription are not set and not displayed in ja-JP and ja-KS.

Bumps [actions/github-script](https://github.com/actions/github-script) from 6.3.3 to 6.4.1.
- [Release notes](https://github.com/actions/github-script/releases)
- [Commits](https://github.com/actions/github-script/compare/v6.3.3...v6.4.1

)

---
updated-dependencies:
- dependency-name: actions/github-script
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>

Closes transfem-org/Sharkey#52

Generally broke it, need better testing tools

Translated ja-JP and ja-KS language files to Sharkey specifications.