Remove alerts housekeeping

The alerts processing is not required to run regularly.
Fix: ID for curation of alerts (pid:)

During curation of alerts the curated ID became pid:xxxxxxx, this fix
removes the 'pid:'.
This was causing an issued when 'related data' relationships were
created against the alerts records.
Merge commit '54b2c1ca9abff644ab8f9c337a92ee24cd0df5a1'
Merge branch 'master' of https://github.com/jcu-eresearch/TDH-Research-Data-Catalogue