v2.0.0-beta.9

• ical-notifier binary hived off
  • add RSS Feed output
  • add Webhook output
  • add DB output
• Frontend
  • profile change viewer
• configuration changes
  • !! legacy config upgrades not supported!
  • data.yml file for profile and notifier information (follows old config.yml format)
  • config.yml now only contains server configuration information
  • seperate config.yml for ical-notifer
  • remove cleanup timers (not implemented anyway)
  • import data now takes data.yml file as argument to import into DB
• add reporting on startup to get a sense of how many instances are in use. disable via --disable-telemetry
• add /health endpoint and docker healthcheck
• system tests