Fix pod config in tests

You need a `config.json` next to this example. I just symlinked mine.
Fix Twitter tests

Our faked URLs need updating, particularly because our page size changed and
`include_entities` is now true by default in Twitter's API.

Also removed the old, defunct testlib.
Fix Instagram tests

Updating Fakeweb URLs. There's also no reason to pass through the `uri` if it
doesn't exist - especially when it gets included in the query string.

Also removed the defunct testlib.
Fix lconfig test

Actually updated the example to use 8042 like the tests expect. This doesn't
appear to affect how the tests run.