JACoW filters and metadata. Codimd schemas. OC-dev CI.

Changes:

  • [SEARCH-96] JACoW filters and metadata
    • Support file metadata extraction and indexing
      • authors, keywords, creation date, content type and title
    • Webservices filters and facets:
      • aggs: authors, sites, keywords
      • filters: author, site, keyword
      • matches: author_match, keyword_match, site_match
  • [SEARCH-92] Add codimd schemas
  • [NI] Add openshift-dev CI