BibMerge: adds CFG_SITE_RECORD as script data
- Fixes a problem when trying to edit master or slave record in the record merge interface. (closes #2580) (PR #2237)
Signed-off-by: Øystein Blixhavn <oystein@tind.io>
Tested-by: Tibor Simko <tibor.simko@cern.ch>