permissions: fix link to folder from permissions list

Also, closing Add Permissions CTA when DashboardPermissions and
FolderPermissions unmounts.
Fixes #10749"

pkg/api/dashboard.go

@@ -99,7 +99,7 @@ func GetDashboard(c *middleware.Context) Response {
 			return ApiError(500, "Dashboard folder could not be read", err)
 		}
 		meta.FolderTitle = query.Result.Title
-		meta.FolderSlug = query.Result.Slug
+		meta.FolderUrl = query.Result.GetUrl()
 	}
 
 	// make sure db version is in sync with json model version

pkg/api/dtos/dashboard.go

@@ -27,7 +27,7 @@ type DashboardMeta struct {
 	IsFolder    bool      `json:"isFolder"`
 	FolderId    int64     `json:"folderId"`
 	FolderTitle string    `json:"folderTitle"`
-	FolderSlug  string    `json:"folderSlug"`
+	FolderUrl   string    `json:"folderUrl"`
 }
 
 type DashboardFullWithMeta struct {