Edited the content/bikasetup.py schema for readability

I prefer this format, it's used in content/batch as well, and
it makes the file easier to edit and read.
LIMS-1391: Add IdentifierTypes (from bika.health) to bika.lims
fix icon location (health->lims)
IdentifierType
hidden/default fields in ar_add_by_col.pt rendered as hidden TR
Mark some fields as non-required for JS convenience

All these fields are hard requirements, but very obvious, and none of
them have user interface requirements - they are completed in code
ar-add_by_cols.pt first submit handler stub
ST<->SP in ar_dd; wip
Finish LIMS-1391 IHaveIdentifiers
Merged 'develop'.

Conflicts:
	bika/lims/content/bikasetup.py