Convert all line endings to CRLF in release version

[Reinmar]

There's a lot of code with CRLFs.

[wwalc]

Let's handle in this ticket just the release process.

After a short discussion we decided to enforce CRLF in release version. Make sure to process only selected text files (html, css, js, txt, md etc.) to not break binary files (e.g. images).

[oleq]

@wwalc https://www.npmjs.org/package/grunt-eol may do the trick.

[wwalc]

I created a t/100 branch where the grunt build tasks is using grunt-eol. Unfortunately, due to hardcoded compression in app.js, it is impossible to do the replacement when the zip file is created.

We should switch to https://www.npmjs.org/package/grunt-contrib-compress with creating the packages.

[wwalc]

Looks like this will be handled in #55.