Changes related to the removal of the deprecated AliCDBGrid::GetLatestVersion:

Changes related to the removal of the deprecated AliCDBGrid::GetLatestVersion:
- AliFatal is issued in AliCDBGrid::GetEntry when no CDB entry is found
- an exception is thrown in AliCDBLocal::GetEntry when no CDB entry is found
- the AliFatal is removed from AliCDBStorage::Get.
AliCDBGrid::GetLatestVersion will be made private or removed as soon as the
corresponding calls are removed from HLT code
(AliHLTPendolino, AliHLTRootSchemaEvolutionComponent, AliHLTMiscImplementation)
which is the only client of this method.