columns missing from https://www.cbioportal.org/mutation_mapper

[inodb]

• hgvsc
• gnomad
• clinvar

Would it be possible to make some constant variable that indicates the same columns for all mutation tables of:

• mutations tab
• patient view
• https://www.cbioportal.org/mutation_mapper

Another solution like change the base mutation mapper class to include all columns when genome nexus is enabled could work as well

[leexgh]

@inodb do we need Exon and dbSNP in mutation mapper table?

[inodb]

@leexgh yes