* Hardcoded the most secured TLS options.

its now possible to turn of image uploading in alert notifications
for those who operate on very sensitive data.

closes #7419

ref #7541

Changes default from name in smtp settings
from Grafana Admin to Grafana.

Fix for integration test (which is skipped but that
did not work)

Updates mailer to include `from_name` value

Updates the messafe `From` field to include the name and email of the
sender.

Updates the `SmtpSettings` struct to include a value for setting the
name of the email sender.

Add more physics units

Closes #7449

annotation: wrap text in drop_element, fixes #7542

update datasource logos

this will save us ~100TB of unneeded data in the long term.