CMS: adds CDATA tags for embedded HTML in fixtures
UI: changes text in "Download" button on records

* ( addresses #443)
collections: fixes error in "collection_overview"
records: updated record-brief with "Global Tag"
templates: propagate recent metadata additions

* ( addresses #480 )
UI: link to collections fixed
ALICE: update of `alice-derived-datasets.xml`

* Updates `alice-derived-datasets.xml` with number of events and more.
  (addresses #405) (PR #463)