erp5_certificate_authority: Certificate Authority Tool: All ERP5 objects *must* have have a Portal Type in Types Tool.

And remove hack in erp5_promise which was creating a non-Portal Type class of
portal_certificate_authority. Instead, add a depend on erp5_certificate_authority.
`providesI*` accessors are now in BaseAccessorHolder rather than Base due to ZODB
Components, this breaks reindexing (`AttributeError: providesIPredicate`).

This gets rid of:
  WARNING ERP5Type.dynamic Cannot find a portal type definition for 'Certificate Authority Tool', trying to guess...