Fix visibility level texts on application settings

Introduced by me through !2005

CHANGELOG

@@ -9,6 +9,7 @@ v 8.5.0 (unreleased)
   - Whitelist raw "abbr" elements when parsing Markdown (Benedict Etzel)
   - Don't vendor minified JS
   - Track project import failure
+  - Fix visibility level text in admin area (Zeger-Jan van de Weg)
 
 v 8.4.1
   - Apply security updates for Rails (4.2.5.1), rails-html-sanitizer (1.0.3),

app/views/admin/application_settings/_form.html.haml

@@ -14,11 +14,11 @@
     .form-group.project-visibility-level-holder
       = f.label :default_project_visibility, class: 'control-label col-sm-2'
       .col-sm-10
-        = render('shared/visibility_radios', model_method: :default_project_visibility, form: f, selected_level: @application_setting.default_project_visibility, form_model: Project)
+        = render('shared/visibility_radios', model_method: :default_project_visibility, form: f, selected_level: @application_setting.default_project_visibility, form_model: Project.new)
     .form-group.project-visibility-level-holder
       = f.label :default_snippet_visibility, class: 'control-label col-sm-2'
       .col-sm-10
-        = render('shared/visibility_radios', model_method: :default_snippet_visibility, form: f, selected_level: @application_setting.default_snippet_visibility, form_model: PersonalSnippet)
+        = render('shared/visibility_radios', model_method: :default_snippet_visibility, form: f, selected_level: @application_setting.default_snippet_visibility, form_model: ProjectSnippet.new)
     .form-group
       = f.label :restricted_visibility_levels, class: 'control-label col-sm-2'
       .col-sm-10