Add an extended view for objects to show all of their relations

If for example you run `nsot networks list -c 10.10.10.1/32` you just get the output for that network itself:

```
$ nsot networks list -c 10.10.10.1/32
+-------------------------------------------------------------------------------+
| ID CIDR (Key) Is IP? IP Ver. Parent State Attributes |
+-------------------------------------------------------------------------------+
| 5 10.10.10.1/32 True 4 10.10.10.0/24 assigned |
+-------------------------------------------------------------------------------+```
```

This idea is what if we add some kind of flag for "extended" view, it would also include other relations, something like:

```
$ ./nsot networks list -c 10.10.10.1/32 --extended
Network
+-------------------------------------------------------------------------------+
| ID CIDR (Key) Is IP? IP Ver. Parent State Attributes |
+-------------------------------------------------------------------------------+
| 5 10.10.10.1/32 True 4 10.10.10.0/24 assigned |
+-------------------------------------------------------------------------------+

Assignments
+---------------------------+
| ID Hostname Interface |
+---------------------------+
| 2 lax-rtr1 eth0 |
+---------------------------+

Parent
+-------------------------------------------------------------------------+
| ID CIDR (Key) Is IP? IP Ver. Parent State Attributes |
+-------------------------------------------------------------------------+
| 4 10.10.10.0/24 False 4 None allocated |
+-------------------------------------------------------------------------+
```

Eh? Something like this? Perhaps in a more easily consumable format that isn't just a bunch of tables being output?