Merge branch 'master' of http://git.fwt.com/Hotline/hotline

src/Hotline.NewRock/DeviceManager.cs

@@ -357,10 +357,10 @@ namespace Hotline.NewRock
             }
             else
             {
-                exts.Remove(Enumerable.First<QueryExtGroupExt>(exts, x=>x.Id == ext));
+                exts.Remove(exts.First(x => x.Id == ext));
             }
 
-            groupModel.Ext = Enumerable.Select<QueryExtGroupExt, string>(exts, x=>x.Id).ToList();
+            groupModel.Ext = exts.Select(x => x.Id).ToList(); //Enumerable.Select<QueryExtGroupExt, string>(exts, x=>x.Id).ToList();
             await _newRockClient.ConfigExtGroup(
                 new AssginConfigGroupRequest() { Attribute = "Assign", Group = groupModel, },
                 _options.Value.ReceiveKey,