Add statistics for doc-locale endpoint

It looks like you manually changed this file to split the changes to a separate commit. There is an easier way:

 - undo the commit using `git reset HEAD~1` 
 - add the file or files that you want in a separate commit, in this case `git add .gitignore`
 - create the commit: `git commit -m "Add IntelliJ IDEA metadata to .gitignore."
 - add the rest of the files and create the other commit