Add basic widget actions

Description: Add basic widget actions

• Edit Widget: ERM-1612 
• Delete Widget (see below)

Development Tasks:

1. UX and UI designs drawn up for user interaction with widget
2. Create widget menu (Or equivalent – dependent on designs)
3. Submit of DELETE functionality working as expected

Constraints / Checks

• Can be deleted by dashboard owner (not widget creator), or a system administrator
  • Users can only see their own dashboard, so it should not be possible to edit other users' widget instances
• Definition and Type cannot be deleted through this functionality
• widgetInstance is removed from the database rather than just hidden 
• Follows standard FOLIO delete pattern: warning modal and callout confirmation
• Dashboard order weights will not be adjusted, but layout will be redrawn
• Widget manipulation is tied to individual users permissions