Refactor eUsage app permissions

Settings actions

• Settings (eUsage): Can view and edit all settings

General

• eUsage: All permissions
• eUsage: Can view usage data providers and view/download usage reports

Usage data provider actions

• eUsage: Can create and edit usage data providers
• eUsage: Can delete usage data providers

Usage reports actions

• eUsage: Can upload usage reports
• eUsage: Can start harvesting for a single provider
• eUsage: Can delete usage reports