doi link checker UI for registry
Merge branch 'develop' into doi_linkchecker_ui

* develop:
  fix minor bug with selected record tags
  bulk tag interface for adding secret tag / link with theme page
  added secret_tag to theme pages db
  secret tag interface for adding secret tags to theme cms index
  cc805 new theme page to not visible
  more fix for bulk record tagging
  remove debug code
  move bulk tag to its own module
fix typos, mostly
Merge pull request #2 from au-research/doi_linkchecker_ui

Doi linkchecker ui