WebSubmit: fix approval reminder in publiline
WebSubmit: fix approval reminder in publiline

* Replace SendEnglish function with send_approval function that
  uses the webaccess functionalities to retrieve the referees emails
  instead of several values from sbmPARAMETER that are not set/used
  anywere else and that cause errors.

* Replace the link to approve/reject a document (sent in the approval
  reminder email) with the link to the submission interface, since the
  former is not working.

tiborsimko/invenio,inveniosoftware/invenio,inveniosoftware/invenio,tiborsimko/invenio