1.2.5: Limit allowed Event fields

Configuration

• New parameter allowed_event_fields to limit the list of allowed event field names.
  Default (unset) is to allow all fields.

Backend

• Add check for allowed_event_fields

Frontend

• Template preview
  • Add support for unsigned (plain/text) e-mails
  • Show Content Type of resulting e-mail
• Modal window for row details (events, bot logs):
  • add line-wrapping for code blocks
  • format the section headings better

Documentation

• mailgen: add notes on database privs and gnupg