Bug 393 better json output for status

Fixed bug #393 -  https://bugs.tddium.com/bugzilla/show_bug.cgi?id=393
Now JSON output for status has next structure:
```
{
  "running": {
    "git@github.com:solanolabs/tddium_site.git": [

    ]
  },
  "history": {
    "bug-241-add-start-stop-buttons-to-suite-item": [
      {
        "id": 464873,
        "repo_name": "tddium_site",
        "branch": "bug-241-add-start-stop-buttons-to-suite-item",
        "commit": "13a88d4918cdca696a01d660faa18fc9ccb37df6",
        "report": "https://api.tddium.com:443/reports/464873",
        "duration": 0,
        "status": "running",
        "start_time": "2013-10-29T19:34:38Z"
      },
      ...
    ]
  }
}
```

Didn't find new scenario for testing, old tests pass and cover fine.