Allow a range of ids when removing entries plus ask for confirmation

```
$ varuh -R 21
Entry with id 21 was removed from the database
```

Two things here.
1. Should ask for confirmation or force confirm by passing in a `-y` flag
2. Allow range of ids to be removed say something like,

```
$ varuh -R 21 22 23
OR
$ varuh -R 21-23
```
which will remove IDs in range 21 to 23 (21,22,23).

