PortalTransforms: Move Transforms out of erp5_core to their appropriate bt5s.
@rafael @gabriel @kazuhiko @jerome This is a followup of MR !955 (merged) moving Transforms to the following bt5:
- erp5_dms: ERP5OOo/ConversionServer-related Transforms.
- erp5_web: Web Page-related Transform.
- erp5_base: Everything else.
Also, ZODB Components Transforms modules were 'Document Component', whereas it should be 'Module Component' (introduced recently) considering that they have no Portal Type.
I have kept portal_transforms in erp5_core but maybe it should also be moved to erp5_base?