Add outlier status to the Sample details table (curation)

[ppavlidis]

The sample details table would be slightly enhanced by having an indication of outlier status, such as "flag" (not yet removed), "outlier" (already confirmed by curators) or "ok".

This will require some additional computation/fetch on the server.

[arteymix]

In the data model, the BioAssay is actually the one holding the outlier flag, and since a BM can have more than one assay, the flag would apply per BA. I think marking it in the BA column would be best.

I'll add a field to the data model. If we have the BA accession already, I'm sure the outlier flag can be retrieved as well.