Add loading only one time in angular project.
1. Add following code in app.js [crayon-67ee2d8e79ebb272533845/] 2. Add below code in admin/main controller [crayon-67ee2d8e79ec2645701050/] 3. add below html on common/layout/master page [crayon-67ee2d8e79ec4421926518/]
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