Setting upload form to follow workflow additions

If the ability to add files in a workflow is dialed, then we’ll hide
the upload form.
Provide the ability to use regex in form config

Provide the ability to use regex in share-custom-config.xml. For
example: <config evaluator="string-regex" condition="activiti.*"> in
share-custom-config
Merge branch 'release/activi-forms-update'