adding warning and error indicator lines to TimeSeriesView

#### Added feature to allow TimeSeriesView to render a warning and error line at specified limits

View:

![dashboard-3](https://f.cloud.github.com/assets/148128/1557550/716291e0-4f21-11e3-9fa0-4a40fce16f3e.jpg)

Code sample:

```
"Queue Push": {
      source: "http://localhost:4567/",
      TimeSeries: {
        title: 'Queue Push',
        ymax: 1000,
        warn: 600,
        error: 800,
        parent: '#g2-1'
      }
    },
```

#### Added the ability to specify the number of x and y ticks

View:

![dashboard](https://f.cloud.github.com/assets/148128/1557561/5115b948-4f22-11e3-9eda-94578ec64f06.jpg)

Code Sample:

```
"Feed Poll": {
      source: "http://localhost:4567/",
      TimeSeries: {
        title: 'Feed Poll',
        y_ticks: 2,
        display_verticals: true,
        parent: '#g1-2'
      }
    },
```

#### Removed console.log statements from graphene.events.js