[bug] - samplesheet schema for genome field too strict

[feiloo]

The naming scheme for the "genome" field in the samplesheet is overly strict and forbids using paths containing a slash.
It seems sensible to allow more locations than the current directory, like absolute paths.

possible relevant line:

methylseq/assets/schema_input.json

Line 34 in db60bfe

"pattern": "^[a-zA-Z0-9._-]+$",