Removed triggers from the CTA catalogue schema because we now use version 10.3 of the MariaDB database server which unlike version 5.5 enforces check constraints

Moved catalogue/FileSizeMismatch.hpp to common/exception/FileSizeMismatch.hpp because it is so generic

Implement catalogue createDiskSystem,
getAllDiskSystems, deleteDiskSystem methods.

Protobuf3 needs to be linked into the catalogue command line tools as we
use protobuf format to store checksums inside the DB.

The blob is a set of type/value pairs which can be serialised to a byte
array for storage in the DB.

Protobuf3 needs to be linked into the catalogue command line tools as we
use protobuf format to store checksums inside the DB.