Rename of edit label on graph panel

src/app/panels/graph/module.html

@@ -25,7 +25,7 @@
 		<div class="dashboard-editor-header">
 			<div class="dashboard-editor-title">
 				<i class="icon icon-bar-chart"></i>
-				Chart settings
+				Graph
 			</div>
 
 			<div ng-model="editor.index" bs-tabs>