Changed Export CSV Icon

Author: vishwas-r

src/CanvasJS As CSV.js

@@ -20,7 +20,7 @@ function CanvasJSDataAsCSV(chart, fileName) {
 
 		toolBar.lastChild.appendChild(exportCSV);
 	} else {
-		var base64Img = "data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAABAAAAAQCAYAAAAf8/9hAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsMAAA7DAcdvqGQAAADCSURBVDhPzZE7CsJQEEXvFixtLS0EV6AbcB1i6Q5EFLRxMa7H2kI7P4WV3juTgbyQ5ElsPHCYNyFzeR/8HVv6ou+KTzqhWTTc82WCQq40G6If69B3DWdD2gJCHaeRpoAyrf/8HNAJPd2dbqwDDvRB9V2c6bCotejpBnRtnV/S2JfGkSpcNUiOUT3TnF7owjpgRU9FDZKZ2MHSOmdEb77EjGpANUgC4g7iCHuqfmcd0KcaUNUutA7Lu/qaCOk0HEy9AB+PfTgc2PdJxAAAAABJRU5ErkJggg==";
+		var base64Img = "data:image/png;base64,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";
 		var exportButton = document.createElement('button');
 		var chartBound = chart.container.getBoundingClientRect();
 		exportButton.style.cssText = "position:absolute;display: inline-block;padding: 0px 4px;height: 27px;cursor: pointer;text-align: center;text-decoration: none;background-color: #fff;border: 1px solid rgb(33, 150, 243);left:" + (chartBound.right - (chart.options.zoomEnabled ? 115 : 60)) + "px; top:" + (chartBound.top + 2) + "px";