Critical bug fixes

[nicfit]

1. Import from_json to fix SockBase.recv
2. Fix args for moderate_set_role
3. Raise exceptions for HTTP errors.
4. Raise InvalidLogin for HTTP 403

[nicfit]

This good for a first drop @bryant ? After this is in I'll make more PRs for the other stuff in #1

[DanielDublin]

@nicfit trying use the _get method in base.py doesnt work for me.
I'm trying to get all the info about the banned users, a playlist by id and they all fail.

[nicfit]

All the test are passing on this branch for me. What can I run to reproduce?

plugdj.tests.test_join_room ... ok
plugdj.tests.test_chat ... ok
plugdj.tests.test_send_nonstring_chat ... ok
plugdj.tests.test_really_long_chat ... ok
plugdj.tests.test_user_info ... ok
plugdj.tests.test_fail_login ... ok
plugdj.tests.test_get_room_state ... ok

----------------------------------------------------------------------
Ran 7 tests in 2.719s

OK
_________________________________________________________ summary __________________________________________________________
  py27: commands succeeded
  congratulations :)

[DanielDublin]

I tried to run in my Bot.py
self.plug._get("bans")
Also 'self.plug._get("bans", jason = {slug:'room_name')'
And it ended up with errors.
Basically attempting to recieve a json file containing the ban info of all the banned users

[nicfit]

What are the errors? I just added a _get("bans") test to this PR. This sounds environmental.

[DanielDublin]

This is odd, i havent touched it for over 24 hours and yet now it seems to be working.
It said last time that a value was missing or something. Strange.