Collection with ObjectID as _id won't update.

Let's say I have declared collection as follows.

``` javascript
Books = new Mongo.Collection("books", {idGeneration :"MONGO"});
```

and crated tabular table with following selector

``` javascript
TabularTables.BooksTable = new Tabular.Table({
name: "BooksTable",
collection: Books,
columns: [
......
],
selector: function( userId ) {
return { userId: new Mongo.ObjectID(userId),isDeleted: false}
}
});
```

What's working and what's not?
1. Creation a doc will update table UI : `Yes`
2. Editing of visible fields will update UI: `Yes`
3. marking `isDeleted` filed to `true` will remove row: `No`

Is this bug due to using ObjectID as _id?
Yes, because changing collection declaration as below will make row disappear when `isDeleted` field is set to true.

``` javascript
Books = new Mongo.Collection("books"});
```

Start by reproducing the issue with a Mongo.Collection using idGeneration: "MONGO" and a Tabular.Table selector containing a Mongo.ObjectID userId and isDeleted: false. Compare the table behavior when isDeleted changes to true with MONGO and default IDs; done means the matching row is removed in both cases.

Written by the indexing model from the issue text.