Allow TLS 1.2

Documentation changes

Do not upload if no countries or just one and it's the origin country

Bumped version to 2.3.0

Hotfix to disable validation of lastBundleTag. Will be reverted later...

Bumped version to 2.2.0

Do not download before the set date

MT release aligned with v1.1.2

Merge pull request DP-3T#218 from DP-3T/feature/clouddbpoolconfig

Feature/clouddbpoolconfig

Release Hotfix