global: minor fixes

* Fixes an empty curation actions box when a user was authenticated
  but did not have access to curate nor owned the record.

* Fixes 'Cite as' to remove empty fields.

* Fixes escaping of community collections descriptions.

* Fixes extra hello in activation emails.

* Fixes 'publication/image > other' collection queries to not be
  identical
WebSearch: remove search result numbers on mobile