Make the code look similar in all files.  There was quite some
mix of styles before. In this step we do:

 * indent 4 steps everywhere
 * no spaces inside parenthesis
 * space between if/while/etc and the parenthesis
 * opening braces on the same line as if/while/etc
 * one initializer per line in constructors

So basically we have

    if (foo) {
        ...
    }

instead of

  if( foo )
  {
    ...
  }