Dashboard view to be selected based on user role

[bajiat]

Implement the rules for which dashboard the user should see

• admin for dashboard administrators
• owner for dashboard owners

Definition of done

• List or wireframe of dashboard elements exists (see Design the dashboard analytics for API owners #1158)
  • List or wireframe indicates user role visibility for each dashboard element
• Template helper exists for checking user role (returing true / false to toggle elements)
• Dashboard elements are only visible for users with the appropriate role

[Nazarah]

@NNN : do we have separate lists of what to display in separate admin and owner views? If so please list them here. Might need to rework on the wireframes.