Add file via browser when testing the UI

Now that it's possible to add a file via the API
we need to make sure the UI test uses the
browser UI fabrication, not the API.

qa/qa/specs/features/browser_ui/3_create/repository/create_edit_delete_file_via_web_spec.rb

@@ -12,7 +12,7 @@ module QA
         file_content = 'QA Test - File content'
         commit_message_for_create = 'QA Test - Create new file'
 
-        Resource::File.fabricate! do |file|
+        Resource::File.fabricate_via_browser_ui! do |file|
           file.name = file_name
           file.content = file_content
           file.commit_message = commit_message_for_create