else/else if on newline

I prefer to move logic constructions in separated lines:

```javascript
if (a) {
// ...
}
else if (a != b) {
// ...
}
else {
// ...
}
```

This makes code more git friendly (like trailing commas). And also it makes it simple to comment `else if` and `else` sections. Each block is prepended with it's own condition.