Remove duplicative _as_array workflow inputs.

Now that UR will auto-box these when passed to commands expecting
is_many properties, we can simplify this to pass the same input to
all commands requiring it.
Updated class browser cache.
Updated `genome` tab completion.
Updated `gmt` tab completion.
Merge pull request #83 from tmooney/simplify_clinseq_workflow

Remove duplicative _as_array workflow inputs in ClinSeq