bugfix: list builtin alerts and dashboards

src/webapi/router/router_builtin.go

@@ -20,7 +20,7 @@ func alertRuleBuiltinList(c *gin.Context) {
 		fp = path.Join(runner.Cwd, "etc", "alerts")
 	}
 
-	files, err := file.DirsUnder(fp)
+	files, err := file.FilesUnder(fp)
 	ginx.Dangerous(err)
 
 	names := make([]string, 0, len(files))
@@ -93,7 +93,7 @@ func dashboardBuiltinList(c *gin.Context) {
 		fp = path.Join(runner.Cwd, "etc", "dashboards")
 	}
 
-	files, err := file.DirsUnder(fp)
+	files, err := file.FilesUnder(fp)
 	ginx.Dangerous(err)
 
 	names := make([]string, 0, len(files))

src/webapi/router/router_mw.go

@@ -67,6 +67,7 @@ func user() gin.HandlerFunc {
 		}
 
 		c.Set("user", user)
+		c.Set("isadmin", user.IsAdmin())
 		c.Next()
 	}
 }