Incorporate Gene Dosage regions

[tnavatar]

• Incorporate Gene Dosage Regions into database
• Compute the overlap of ClinVar copy number variants with these regions.
• Add to conflicts API cases where the dosage curation is inconsistent with the classification in ClinVar

[tnavatar]

Looks like I have a partial implementation of this; regions are being stored in the database, but not entirely incorporated into our sequence stores.