Add titles to warning presets in admin UI (#13252)

app/controllers/admin/warning_presets_controller.rb

app/models/account_warning_preset.rb

app/views/admin/account_actions/new.html.haml

app/views/admin/warning_presets/_warning_preset.html.haml

app/views/admin/warning_presets/edit.html.haml

app/views/admin/warning_presets/index.html.haml

config/locales/ar.yml

config/locales/ca.yml

config/locales/co.yml

config/locales/cs.yml

config/locales/cy.yml

config/locales/da.yml

config/locales/de.yml

config/locales/el.yml

config/locales/en.yml

config/locales/en_GB.yml

config/locales/eo.yml

config/locales/es-AR.yml

config/locales/es.yml

config/locales/et.yml