Filter on types in home > administer > content

The attached patch adds another filter option, to filter on node types too.

I think the final aim of this feature would be to get an UI like this:

[view posts that are updated or promoted v]
[and v]
[of any type v]
[and v]
[in vocabulary v]
[and v]
[in term v]

the [and v] would be dropdown options where one can choose booleans OR or AND

the [in vocabulary v] and [in term v] will appear only when appropriate.

Lets say someone has assigned vocabulary 'drinks' and 'food' to blogs. When in 'type' the option 'of type blogs' is selected and [go] is pressed, then all vocabularies assigned to type blog appear in the selection box. In our case that would be 'drinks' and 'food'
If one selects 'food' and presses [go] again, the terms in vocabulary 'food' will appear in yet another selection box.

Anyway, this patch only allows one to select by type. But i'd like the above thing to be in drupal, since it allows us to better 'manage content'. And since drupal is a CMS, thats what we want.