Added canvas implementations for several desktop graph types. Incorporated desktop graph
types into image generation.
	modified:   build.json
	new file:   js/CanvasAreaSeries.js
	new file:   js/CanvasCandlestickSeries.js
	new file:   js/CanvasComboSeries.js
	new file:   js/CanvasFills.js
	new file:   js/CanvasLineSeries.js
	new file:   js/CanvasLines.js
	new file:   js/CanvasOHLCSeries.js
	new file:   js/CanvasSeriesImpl.js
	modified:   js/Patches.js
	modified:   js/StockIndicatorsChart.js
	modified:   js/StockIndicatorsPrinter.js
	modified:   js/ThresholdCanvasLineSeries.js
	modified:   js/ThresholdCanvasLines.js
	modified:   js/ThresholdLines.js
	modified:   js/VolumeColumnCanvas.js
Build files.