Rudder

As we still don't have a linter, we have a lot of files with tailing spaces which cause a huge amount of conflicts in space-unsenstive code file (scala, html, css, js, etc).

We just need to take it down one time for all, and add a linter + git pre-commit hook to take of the solution on the long run.

For now, I'm only taking care of scala project, where there is the more such problem, and the less risk to touch space-sensitive files.

It need to be done in each project, and the merge to hight branch will need to be done with care.