Added tk.png and updated the custom css
Done the CSS related changes
Great Rajib changes
Merge branch 'Sprint1' of https://github.com/aptara/AdvantexeAdminPortal into Sprint1

Conflicts:
	Advantexe.Protal.v11.suo
	Web/Views/Client/ManageClient.cshtml
	Web/Views/Shared/_AdminLayout.cshtml