Shifting /browse or /dashboard from Artifacts contoller to Home Controller.

Currently, the browse and dashboard methods are present in Artifacts controller.

Although the Artifacts Controller is mainly for http://localhost:2354/artifacts and can be used for artifacts related functionality.

So we should shift the browse and dashboard from Artifacts Controller to Home Controller.

PS: browse and dashboard are navigation related page/function i.e. it contains list of links for exploration.