Update podfile.lock for cocoapods 0.32.1

Update cocoapods with
```
sudo gem install cocoapods
```
Fix #90: Sort contests by ballotPlacement

Other related fixes:
  - Remove district.id from contest details
  - Remove ballotPlacement from contest details
  - Sort candidates by orderOnBallot

@jungshadow These were the glaring omissions I saw. Open a new issue if
there are any other fields that should be added/removed and we will
get to them if we can.
Merge branch 'feature/hide-presentational-fields' into develop