Add fallback code for old mason ui for workflow probing
New generic validators Connector and Regex
Add validators for metadata workflow
Fix inline docs
Add some more magic glue for multivalue fields in metadata

Fiels in the metadata workflow can now be marked multivalued
which lets the new ui render cloneable fields. The class can also
transition from scalar values to multivalues when loading the
initial metadata fro the table as the issuance wfl usually only write
a single item (e.g. mail)
Version Bump 0.11.4-3
Add missing validator to MANIFEST, fixes #122
Change cert attribute handling in metadata workflow

Remove the bracket notation in the database
Remove index on wfl attribtues in  schema init

As the init creates the value as a lontext the index creation failes.
Init code needs cleanup or replacement.
Fix a to generous eval in workflow factory (F'up on 063421)
Version Bump 0.11.4-4