Add hla normalization

[rhdolin]

Description

• app/common.py

  • import pyard
  • revise get_haplotype to search on HLA normal form
  • revise get_haplotype's handling of "|" (since this character is used within glstrings).
  • revise query_PharmGKB_by_haplotypes to enable case-insensitive and normal form search.

• app/endpoints.py

  • revise find_subject_specific_haplotypes to enable case-insensitive and normal form search.
  • revise find_population_specific_haplotypes to fix and/or logic.
  • revise find_population_specific_haplotypes to to enable case-insensitive and normal form search.

• add / revise test cases

[mihaitodor]

Nice one Bob! There's just one small issue with initialising pyard in both app/common.py and app/utilities_endpoints.py. We should move that code somewhere in utilities, maybe in a new .py file.

[mihaitodor]

We'll have to do this in a single place to avoid duplication and having it loaded multiple times in memory. It's probably better to have a .py file for it in the utilities folder and have a wrapper function for ard.redux()` in there.

[mihaitodor]

I took a stab at fixing this in d6b6121.