Tree layout changes
Merge branch 'master' of https://github.com/dhanasiddharth/Dashboard.git

Conflicts:
	src/main/java/org/hpccsystems/dashboard/controller/EditTreeController.java
	src/main/java/org/hpccsystems/dashboard/controller/EditWidgetController.java
	src/main/java/org/hpccsystems/dashboard/controller/component/ChartPanel.java
	src/main/java/org/hpccsystems/dashboard/entity/chart/utils/ChartRenderer.java
	src/main/webapp/demo/layout/edit_tree.zul