Remove trailing whitespace
Swap order of candle-stick-plot docstring and args

Additionally, update default chart title to "Candle Stick Plot".
Update default titles in docstrings for charts/plots

Updated docstrings:
* time-series-plot
* scatter-plot
* line-chart
* bar-chart
* pie-chart
* box-plot
* function-plot
Merge pull request #184 from mneilsen/master

Minor updates to charts.clj documentation