Indico config

Changes:

  • Add indico and lcagenda filters and schemas
  • Improve error handling
  • Celery improvements: logging and worker_proc_alive_timeout
  • Add index to records buckets
  • Config CERN_SEARCH_PROCESS_FILE_META can be a bool or a list of fields
  • New config CERN_SEARCH_COPY_TO_METADATA allows copying stored fields to metadata
  • Add nested filter facet
  • Support gzip access list
  • Support default operator query param