[master] Add file metadata to TS files
The TransformationFiles table of the TS has been prepared long ago to receive additional metadata (FileType, Size, RAWAncestors) but this never was implemented: neither the addition of the information nor its usage.
This PR is only adding the information, and this is tested and works.
Another PR for v9r0 will be made for using the information in the plugins. This requires certification, although it is tested with dirac-test-plugin
In addition fix the usage of se.getStatus() ;-)