remove positionize_page + default position

app/models/communication/website/page/accessibility.rb

app/models/communication/website/page/communication_post.rb

app/models/communication/website/page/education_diploma.rb

app/models/communication/website/page/education_program.rb

app/models/communication/website/page/legal_term.rb

app/models/communication/website/page/organization.rb

app/models/communication/website/page/person.rb

app/models/communication/website/page/privacy_policy.rb

app/models/communication/website/page/research_paper.rb

app/models/communication/website/page/research_volume.rb

app/models/communication/website/page/sitemap.rb

app/models/communication/website/page/with_type.rb