Implement reference_id / source_id vs folder / file name consistency check

[cdeil]

I just noticed that we had SED input/papers/2007/2007A%26A...472..489A/tev-000115.ecsv in the input folder, but it wasn't present in the output folder:

$ find . -name '*000115*'
./input/papers/2007/2007A%26A...472..489A/tev-000115.ecsv
./input/papers/2007/2007A%26A...472..489A/tev-000115.yaml
./input/sources/tev-000115.yaml

The reason was that source_id in the input file was incorrect.
Fixed in 201c198 .

This is a reminder issue for myself that I should implement a consistency check for the input header keys reference_id and source_id versus the folder and file names.

[cdeil]

I've removed docs/data/sources/000132/gammacat_000132_2007A%26A...472..489A_sed.ecsv, which was an SED file put for the wrong source 132 as a result of the data entry error mentioned above in 4e5352e .

[pdeiml]

I think this issue is the same or nearly the same as issue #126, isn't it?