Remove global app references (#7433)

* remove global app references

* test fix

* fix api4 test compilation

app/authorization_test.go

@@ -10,8 +10,7 @@ import (
 )
 
 func TestCheckIfRolesGrantPermission(t *testing.T) {
-	a := Global()
-	a.Setup()
+	Setup()
 
 	cases := []struct {
 		roles        []string