feat(settings): hide stacks for non admin when settings is set (#4025)

* refactor(settings): replace disableDeviceMapping with allow

* feat(dashboard): hide stacks if settings disabled and non admin

* refactor(sidebar): check if user is endpoint admin

* feat(settings): set the default value for stack management

* feat(settings): rename field label

* fix(sidebar): refresh show stacks state

api/http/handler/stacks/stack_create.go

@@ -48,7 +48,7 @@ func (handler *Handler) stackCreate(w http.ResponseWriter, r *http.Request) *htt
 		return &httperror.HandlerError{http.StatusInternalServerError, "Unable to retrieve settings from the database", err}
 	}
 
-	if settings.DisableStackManagementForRegularUsers {
+	if !settings.AllowStackManagementForRegularUsers {
 		securityContext, err := security.RetrieveRestrictedRequestContext(r)
 		if err != nil {
 			return &httperror.HandlerError{http.StatusInternalServerError, "Unable to retrieve user info from request context", err}