Optimized Sunburst view labels

This patch adds some tweaks to the Sunburst view to make sure that the
labels of the different arcs are properly displayed, i.e., that word
wrap is enabled and the text is aligned to the left.
Change-Id: I59ae711d508131a27363452a7418c93f04246987
diff --git a/bundles/org.eclipse.capra.ui.sunburst/src/html/index.html b/bundles/org.eclipse.capra.ui.sunburst/src/html/index.html
index be0eccd..cb761d9 100644
--- a/bundles/org.eclipse.capra.ui.sunburst/src/html/index.html
+++ b/bundles/org.eclipse.capra.ui.sunburst/src/html/index.html
@@ -18,7 +18,18 @@
 	<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
 	<script src="https://unpkg.com/d3"></script>
 	<script src="https://unpkg.com/sunburst-chart"></script>
-	<style>body { margin: 0 }</style>
+	<style>
+		body { 
+			margin: 0;
+			padding: 3px;
+		}
+		.sunburst-tooltip {
+			white-space: normal;
+		}
+		.sunburst-tooltip .tooltip-title {
+			text-align: left;
+		}
+	</style>
 </head>
 <body>
 	<div id="chart"></div>
@@ -31,6 +42,8 @@
 	      .size('size')
     	  .color(d => color(d.name))
 	      (document.getElementById('chart'));
+
+	
 	</script>
 </body>
 </html>