Outstanding minor fixes

[veronicar239]

• [x] Publication metadata: section "Details for Scientific (Review) Articles". A blank selection is needed under the dropdown menu for the "Journal" category. Technical reports do not have an associated journal, but at the moment each technical report is automatically (mistakenly) assigned the first alphabetically listed journal (Acta Ichthyol). For example see http://mesophotic.org/publications/281/edit

• This is also an issue for book chapters. Book chapters are automatically assigned the first alphabetically-listed journal (Acta Ichtyol). For example see http://mesophotic.org/publications/270/

• [x] After this is fixed, we need to go through and edit (remove erroneous 'Acta Ichtyol'):

• technical reports

• book chapters

• technical books

• scientific books

[pimbongaerts]

Fixed with 425d10f

[pimbongaerts]

Removed erroneous references to Acta etc through a script:

    Publication.where(journal_id: 145).each do |publication|
        if not publication.scientific_article?
            puts "Removing journal for #{publication.id}:#{publication.title}"
            publication.journal = nil
            publication.save!
        end
    end