Why Manage_fields and Manage_display tab are not shown in content type? Suddenly My dev site is not showing 


  Manage_fields and Manage_displays


in all content types. I am using contributed module admin_menu. I clear all cache but it happens same. This is multilingual site. I can't understand why it occurs? Can anyone solve this problem? I have enabled field_ui modules.
There is unchecked permission of field. After checked it shows the tabs. Make sure two things to solve this problem.
1. Enable Field UI (field_ui) module
2. Make sure the field in permission is checked


  admin > people > permissions