* because we depend on Flask-Menu being initialized

* extends the user preferences schema
* adds a page to the user's settings
* extends the registration form to query this from the start

* the "profile" is actually a user object already...
* seems like a leftover from older versions user models

* in hopes that publish failures will be less confusing from now on
* also, to detect errors (e.g. missing files in MANIFEST.in) earlier

* as long as they have the "trusted-user" role, which is required to
  create the record in the first place
* however, publishing new records still requires the "trusted-publisher"
  role

* enable sending of registration mails to give our users a warm welcome
  and a kickstart into the system's usage
* change some default configuration related to email sending
* also, rework the auto-confirmation of new accounts to use the new-ish
  mechanism provided by Invenio-OAuthClient

* maybe I shouldn't have had that last drink...

* because they weren't registered before...

* for now, we're limiting the updates to employees who have their ORCID
  identifier linked on their TISS profile, because that allows us to
  create perfect matches

* because it can happen that the current_user is set to None

* that was a little bit overly specific

* because we know that writing good READMEs from scratch is much harder
  than starting from a template

* Currently only people from TUW can sign-in, which is why the value is hard-coded.
* Closes #4

* because the archive ("download all") is generated on the fly and thus
  blocks one uwsgi worker thread for the download duration