Ignoring requests containing list instead of dict

[sassanh]

If a request's body is a json list instead of a json object django-oauth-toolkit raises and exception. It breaks bulk requests for drf for example. This commit fixes it.

[sassanh]

Discussed here: #456

[coveralls]

Pull Request Test Coverage Report for Build 929

• 0 of 0 changed or added relevant lines in 0 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage decreased (-60.5%) to 32.568%

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Totals
Change from base Build 923:	-60.5%
Covered Lines:	383
Relevant Lines:	1176

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💛 - Coveralls

[coveralls]

Pull Request Test Coverage Report for Build 930

• 0 of 0 changed or added relevant lines in 0 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage decreased (-0.1%) to 92.931%

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Totals
Change from base Build 923:	-0.1%
Covered Lines:	1170
Relevant Lines:	1259

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💛 - Coveralls

[sassanh]

Related issues:
#398
#466

[jezdez]

@sassanh Please make sure to let other members review your pull requests and don't merge them automatically.

[sassanh]

@jezdez this PR was reviewed here: #456 I just created a new one to clean it up.

[jezdez]

@sassanh Ah, excellent, that wasn't mentioned specifically here or there and someone raised the behavior correctly in #610. Please make sure to make cross-references when you open PRs as new ones. I guess the reasoning was because #456 was opened against an "unknown branch" (your fork)?

[sassanh]

@jezdez No I just thought there are lots of unnecessary commits (3) for such a simple change. So I tried to clean up the main PR but I failed so I created another one.
I'll make sure I won't merge a PR on jazzband unless it has reviews.

[jezdez]

@sassanh Gotcha, thanks!

[n2ygk]

@jleclanche @jezdez Bringing this back up as I don't see an independent review approval for this commit. I'm trying to figure out how to document this issue for the 1.3.0 release (#785) since there was no CHANGELOG entry created. I'd appreciate a quick second look.