- Break the rendering portion of the DailyDataChart out from the Data Querying part
- Reuse the rendering to grab data from surveys instead.
- Support multiple lines on the line graph.

- Simplify presentation by always assuming an array of dataKeys but defaulting to a single entry array.
- Support multiple colors for all chart types.

- Renamed DataChart to TimeSeriesChart
- Had SurveyDataChart "normalize" it's time gaps so that it's passing data in a way that the TimeSeriesChart expects.
- Adjusted SurveyChart setup params so you can pass arrays of surveys or result identifiers if you wanted to "interlace" results from two different surveys and treat them as one data stream (a daily and weekly survey, for example).

… series charts

- Using milliseconds as key instead of date string allows use of 'time' scale for X-Axis
- Lets Recharts appropriately space points along the x-axis *without* having to pass it a data point for every day in the range.
- DailyDataChart and SurveyDataChart no longer have to "normalize" their data, which eases the data parsing.
- Gives finer control over X-Axis ticks, particularly along longer timescales

Fix generating too many months of ticks, fix bar padding on timescale graph

- Fix directory name of TimeSeriesChart
- Fix DailyDataChart needing to display gaps in data over the course of graph
  - Adds a dataGap feature to the TimeSeriesChart to figure out when there is a gap of data large enough to put a hole in the graph.
  - This allows the DailyDataChart to specify a gap of 1 day, while SurveyData can set it to 1 week, or whatever interval the survey is being sent at.
- Fix DailyDataChart never showing loading indicator

Per expected requirements for HeartRateChart - set ticks to every 3 hours.

- isToday styling bolds *everything* on intraday which isn't intentional

- Model Month behavior; by default go 6 months back from the current month, all the way back to the 1st.
- Fix tick mark generation on TimeSeriesChart for multiple possibilities of how the 6 month span starts, to always get the ticks in predictable spots.
- Add stories to demonstrate this behavior.

…eriesChart

- This was preventing the Loading indicator from ever being presented.

Can re-use because DailyDataChart is prevented from calling with 6Month parameter by other type checking.

Avoids parallel arrays for keys and colors.  Maintain backwards interface to DailyDataChart for compatibility purposes by mapping single chart series properties to multiple series properties.