Release 2.5.16

Issues fixed

Fix null reference exception when viewing history for a Test Area
Fixed an issue where the history tab for a Test Area failed with a null reference exception, if the history include changes to the readiness state for the area

Missing history entry when changing ready state for a Test Area
Fixed an issue where no history entry was recorded when the readiness state for a Test Area was changed using the form and the save button.

Improved diagnostics on internal error in View validation (ticket: 4621)
Studio intermittently emit internal validation errors during validation of views in the Source Map. This release does not fix the core issue, but it logs diagnostics information in the Event Log to assist Hopp in diagnosing the issue.

Treat blank-only field in CSV files as null value for nullable data types other than Char (ticket: 4623)
The new BulkDataLoaders introduced in 2.5 changed the behavior when loading CSV files. Before 2.5, any field in the file targeting a metadata field of a nullable data type other than Char where treated as a null value when the value in the CSV file was an empty string or a string containing only spaces.

With 2.5, only empty strings were treated as null. Space-only fields from the CSV files were parsed to their corresponding data type, which of course failed.

This issue is now fixed so space-only fields are also treated as null values in this case.