please use either tabs or spaces, but not both

Everybody has a different tab width. Most common is 4 spaces, but I personally use 3. Github uses 2 to display a diff.

I do not usually argue about codestyle, but code that looks like this sure can be considered a bug:

```javascript
    var bar_cpu = Monit.multi(40, (i * 2) + 3 + i, {
      width: 30,
      solid: {
    text: '|',
    foreground: 'white',
    background: 'blue'
      },
      empty: {
    text: ' '
      }
    });
```