AccessControl: frontend changes for adding FGAC to licensing (#39484)

* refactor licenseURL function to use context and export permission evaluation fction

* remove provisioning file

* refactor licenseURL to take in a bool to avoid circular dependencies

* remove function for appending nav link, as it was only used once and move the function to create admin node

* better argument names

* create a function for permission checking

* extend permission checking when displaying server stats

* enable the use of enterprise access control actions when evaluating permissions

* import ordering

* move licensing FGAC action definitions to models package to allow access from oss

* move evaluatePermissions for routes to context serve

* change permission evaluator to take in more permissions

* move licensing FGAC actions again to appease wire

* avoid index out of bounds issue in case no children are passed in when creating server admin node

* simplify syntax for permission checking

Co-authored-by: Alex Khomenko <Clarity-89@users.noreply.github.com>

* update loading state for server stats

* linting

* more linting

* fix test

* fix a frontend test

* update "licensing.reports:read" action naming

* UI doesn't allow reading only licensing reports and not the rest of licensing info

Co-authored-by: Alex Khomenko <Clarity-89@users.noreply.github.com>

pkg/api/index.go

@@ -6,6 +6,7 @@ import (
 	"strings"
 
 	"github.com/grafana/grafana/pkg/api/dtos"
+	"github.com/grafana/grafana/pkg/api/navlinks"
 	"github.com/grafana/grafana/pkg/bus"
 	"github.com/grafana/grafana/pkg/models"
 	ac "github.com/grafana/grafana/pkg/services/accesscontrol"
@@ -347,16 +348,8 @@ func (hs *HTTPServer) getNavTree(c *models.ReqContext, hasEditPerm bool) ([]*dto
 	adminNavLinks := hs.buildAdminNavLinks(c)
 
 	if len(adminNavLinks) > 0 {
-		navTree = append(navTree, &dtos.NavLink{
-			Text:         "Server Admin",
-			SubTitle:     "Manage all users and orgs",
-			HideFromTabs: true,
-			Id:           "admin",
-			Icon:         "shield",
-			Url:          adminNavLinks[0].Url,
-			SortWeight:   dtos.WeightAdmin,
-			Children:     adminNavLinks,
-		})
+		serverAdminNode := navlinks.GetServerAdminNode(adminNavLinks)
+		navTree = append(navTree, serverAdminNode)
 	}
 
 	helpVersion := fmt.Sprintf(`%s v%s (%s)`, setting.ApplicationName, setting.BuildVersion, setting.BuildCommit)