fixed size of chart + removed redundant button

src/tools/pcaplot_tool.js

@@ -335,7 +335,7 @@ morpheus.PcaPlotTool.prototype = {
 
             console.log(arguments);
             var req = ocpu.call("pcaPlot", arguments, function (session) {
-                var img = $('<img />', {src : session.getLoc() + 'graphics/1/png'});
+                var img = $('<img />', {src : session.getLoc() + 'graphics/1/png', style : "width:720px;height:540px"});
                 _this.$chart.prepend(img);
             });
             req.fail(function () {

src/ui/heat_map_toolbar.js

@@ -250,19 +250,21 @@ morpheus.HeatMapToolBar = function (controller) {
 	toolbarHtml.push('<div class="morpheus-button-divider"></div>');
 
 	toolbarHtml.push('<button type="button" class="btn btn-default btn-xs" data-toggle="tooltip" title="PCAPlot" name="pca">PCA</button>');
+	toolbarHtml.push('<div class="morpheus-button-divider"></div>');/*
 	toolbarHtml.push('<button type="button" class="btn btn-default btn-xs" data-toggle="tooltip" title="create ExpressionSet" name="es">ES</button>');
-
+*/
 
 	$buttons.on('click', '[name=pca]', function () {
 		console.log("test button clicked");
+		controller.getProject().getFullDataset().setESSession();
 		new morpheus.PcaPlotTool({project : controller.getProject()});
 
 	});
 
-	$buttons.on('click', '[name=es]', function () {
+	/*$buttons.on('click', '[name=es]', function () {
 		console.log("es button clicked");
 		var session = controller.getProject().getFullDataset().getESSession();
-	});
+	});*/
 
 
 	var $lineOneColumn = $el.find('[data-name=lineOneColumn]');