Fix Timeseries' legend positioning and background color
Adds feature to directly set the options in Bob's SelectNode

To do so, you simply need to pass in the key "options", an array. Like:

    {
      ...
      options: [
          { label: "Stack Graph", name: "stack" },
          { label: "Bars", name: "bar" }
      ]
      ...
    }

This will turn into:

    <select class="drilldown">
        <option value="bar">Bars</option>
        <option value="stack">Stack Graph</option>
    </select>

Note that it's sorted.
Add option to select Timeseries' renderer

Now you can select between Area, Bars, Lines, Scatter Plot, and Stacks.
Indent TimeSeries' code to use 4-spaces.