Issue #2496437 by Gábor Hojtsy: Front page Drupal core stat confusingly may represent D7, D9 or D10 depending on last release time

Issue #3295810 by drumm, Gábor Hojtsy: Resolve test failures due to changes in dependent test data in potx

- It provides a way for exec() to be called from a web request, which is bad.
- It was cross-module code, which is also bad.
- We can run cron more often to catch up when needed.

Issue #3091062: Use the release version number parsing to find core API version, stick to “8” for 8 & above semver releases

Issue #3116250: Remove l10n_drupal_drupalorg_scan() which had unreachable legacy code to connect to www.drupal.org’s database

Issue #3116250: l10n_server_connector_l10n_project_drupalorg_cron is not set on production, remove unreachable code

Issue #2607956 by herom, drumm, Gábor Hojtsy: Server support for Drupal 8 shipped config across projects (contributed modules)