Quick json import tool via manage.py.

Sample json file:

    {
        "test_card_set": {
            "description": "Just testing stuff out!",

            "whitecards": [
                {
                    "text": "Coat hangers.",
                    "watermark": null
                },
                {
                    "text": "Bad beef.",
                    "watermark": null
                }
            ],

            "blackcards": [
                {
                    "text": "The meaning to life is?",
                    "draw": 0,
                    "watermark": null,
                    "pick": 1
                },

                {
                    "text": "A large collection of \ufffd in a paperbag.",
                    "draw": 0,
                    "pick": 1,
                    "watermark": "watermark"
                }
            ]
        },

        "test_questions_only": {
            "description": "only questions no answers",

            "blackcards": [
                {
                    "text": "questions only eh?",
                    "draw": 0,
                    "watermark": null,
                    "pick": 1
                }
            ]
        },

        "test_answers_only": {
            "description": "only answers no questions",

            "whitecards": [
                {
                    "text": "underpants",
                    "watermark": null
                }
            ]
        }
    }
Improve loading/import performance (10 mins down to 6 secs) with a single transaction.
Import - reduce output verbosity, track card counts.
Start of dict2db doc strings.
Merge pull request #61 from clach04/cardsets

Cardsets import from JSON