Replace i18n for archivebot-archiveheader with corresponding wikidata item.
Reason
The archivebot-archiveheader Template is a language related i18n translation but should be a site/code related L10N. It is not sure if the i18n translations works for all sites an twn should not used for localisation issues.
How to proceed
- Find the corresponding wikidata item(s)
- use this/these items in archivebot
- remove template tests in i18n_tests
- remove archivebot-archiveheader from translatewiki settings for Pywikibot
- remove the translations from the json files
- add the ability to set the template via command option or other implementation to support wikis outside the Wikimedia wiki farm.