Add optional subject parsing to scep workflow

It is now possible to use the subject rendering to manipulate incoming
scep requests by setting subject_style in the scep server config.
See the scep documentation for details.
Version bump 0.11.4-1

Major changes:
* New table workflow attribtues
* SCEP Workflow subject parsing
Fix bug in search_cert when profile and valid_at is combined
Fix deprecated use of defined @array
Version bump 0.11.4-2
Merge branch 'develop' into feature/webui