Reformat Schema and STRchive loci

[hdashnow]

Description

This PR will serve as a base for the changes coming in both #238 and #260.

Fixes: #240

Major Changes

• Reorder fields in schema and STRchive loci json to be more similar to locus pages
• Automate sorting of STRchive loci json fields so that they match the schema order
• Remove deprecated fields "type", "flank_motif" and "source" and where necessary integrate their content into other fields
• Add new locus_structure format and check it against the reference genome for some unusual loci like FAME and XYLT1

Minor Changes

• Fix citation in one of the ataxias that was pointing to the wrong disease

Checklist

• All changes are well summarized
• Check all tests pass
• Check that the website preview looks good
• Update the STRchive version in CITATION.cff, format X.Y.Z. If any major changes, increment Y. If only minor changes, increment Z. If the breaking change (rare), increment X.
• Ask someone to review this PR

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[hdashnow]

@Macayla-weiner would you mind reviewing this change in particular when you get a chance? These are the changes that are most likely to be biologically/diagnostically relevant, so I'd love a second set of eyes on them:

• all the FAME loci locus_structure
• XYLT1 locus_struction and location_in_gene

[Macayla-weiner]

@Macayla-weiner would you mind reviewing this change in particular when you get a chance? These are the changes that are most likely to be biologically/diagnostically relevant, so I'd love a second set of eyes on them:

• all the FAME loci locus_structure
• XYLT1 locus_struction and location_in_gene

Looks good to me!

[hdashnow]

@vincerubinetti, any feedback on this before you try to integrate it with your schema changes?

[vincerubinetti]

I don't see anything in the schema file that will conflict with what I'm doing in my other branch. LGTM.