Checkboxes and Massive Operations on workspaces (dashboards / investigations)

[SamuelHassine]

Use case

As a user with many investigations/dashboard, I want to manage multiple of them at the same time.
Operations I want to perform include:

• deletion of the selected workspaces
• managing accesses of the selected workspaces

Proposed Solution:

• adding checkboxes in the list, like in Groupings list for example
• checking checkboxes open the Massive Operation toolbar at the bottom of the screen (like in Groupings)
• the toolbar contains :
  • a button "Delete" to delete all selected workspaces
  • a button "Manage Access" to manage accesses of all selected wordkpaces (same as the one at the top-right of the workspaces, visible with sufficiant rights)
• Delete button opens a confirmation pop-up
• Manage access button opens a more complex managing access interface than the existing one, as it should be able to display differents accesses rights already active for the selected workspaces.
  

[nino-filigran]

Adding massive operation for Dashboards will be tackled with #6509