CA-343229: Forcefully log out all users when changing their role
CA-343229: Forcefully log out all users when changing their role

- Move _statusUpdaterLock to top of class, rename it, and set as `readonly`
- Extract logout and confirmation prompts into separate methods
- Add list of users that are being manipulated to action titles
- Group logout actions into one `MultileAction` to avoid multiple RBAC prompts being shown
- Tell user they're going to also disconnect other users when logging out current user together with others

Signed-off-by: Danilo Del Busso <766dc0f994b57f2d2e98930ecfa5ee8fb1091a62@citrix.com>

xenserver/xenadmin,kc284/xenadmin,kc284/xenadmin,xenserver/xenadmin,kc284/xenadmin,kc284/xenadmin,kc284/xenadmin,xenserver/xenadmin