OpenAIRE: added task to inactive a registered DOI
installation: add apache vhost templates

* Adds Apache virtual host configuration templates and
  development certificates to make development environment
  setup easier.
usercollection: add pre/post curation signals

* Adds pre/post curation signals for accept/reject record
  actions.
WebStyle: inactivate DOI on reject

* Adds listener to inactivate DOI when a record is
  reject by ZENODO user collection.