Normalize line endings

Followed the instructions on [Github help](https://help.github.com/articles/dealing-with-line-endings) (Re-normalizing a repository) to solve the fact that some files were stored on the repo with CRLF endings and permanently show up as locally modified.
I'm not sure what is needed to prevent future situations in the future, but setting core.autocrlf=true (either on the command line as mentioned on the linked page, or on the Eclipse Git configuration) should help.
However, if future pull requests for e.g. localized resources have the same problem, repeating this operation might be necessary.