Added new selectors to retrieve the monitoring location name and the agency code and added an option to the attachToNode function for hydrographs to selectively add the site name and number to the graph.

Proof of concept. I would like to clean up and or make more clear what occurs when it is a graph only.

Cleaned up the naming for the custom date range range code and eliminated code that was not needed for the feature to work properly.

Added selectors to get all time series for the current variable and to get all methods for the current variable.

Fixed the comment in time-series-selector. Fixed the test in index.spec.js to pass in properly formatted state information (time is always passed as universal time) and added an addition expectation for the startDT parameter.

Created a separate getTsQueryInfo selector to select a specific time series queryInfo object and use in getRequestTimeRange.

Moved requestTimeRangeSelector to timeSeriesSelector and renames to getRequestTimeRange. It also is parameters with tsKey, period, and parmCD so that only a singel request time range is returned.

Moved tsRequestKey to timeSeriesSelector. It's not a selector but I was not sure where to put this helper function.

Updated request tsKey generation so that the request key is "current:P7D" for example for the 7D data.

Rather than nest memoize use the ability to specify multiple parameters. Also a little renaming 'timeseries' to 'timeSeries'. Not a complete check.

Removed selectors that were duplicated in the selectors/timeseriesSelector module and fixed the tests.