New test for valid foreign keys in InnoDB applications. foreign_keys.sql cleaned. Tabs assassinated.

HGNC data URI updated
MIM/MIM2GENE data URI ftp server changed

This reverts commit 856a5aa2.

Remove read coverage support

* dev:
  ensembl_ontology updated to release 75
  added new methods for readthrough counts more test cases for thoses
  test databases in sync with latest schema
  removed Test::Warnings dependency not available with default installation will come back under another form
  looking for value 94, not 58

more test cases for thoses

[ENSCORESW-797]. Use git show to retrieve whatever branch version of sql/table.sql file is requested.

not available with default installation
will come back under another form

fail. This fixes it by sorting out the auto increment identifier

Due to changes in BaseFeatureAdaptor we need to save the state of
meta_coord otherwise a number of tests will begin to fail. Same is
true of xref.

* dev:
  update attrib_type table, using longer varchar for 'code' column

if attribute already exists, not need to scream warnings

The read_coverage table and its API support are being removed
from the variation API; remove calls to these API components
and remove references from code docs

* dev:
  no need leaving unliked entries when removing slice, remove any attached assembly entries

when removing slice, remove any attached assembly entries