WIP: OBA 2.1

Catch all pull request for OBA 2.1 update (to be merged when update is ready). As per [our milestones](http://huboard.com/OneBusAway/onebusaway-iphone/backlog) this release is supposed to be a bug fix and iOS 7 support release. Does everyone agree the issues assigned to [this milestone](http://huboard.com/OneBusAway/onebusaway-iphone/backlog) are the ones that should be addressed before releasing?

Develop branch CI status: [![Build Status](https://travis-ci.org/OneBusAway/onebusaway-iphone.png?branch=develop)](https://travis-ci.org/OneBusAway/onebusaway-iphone)
[Open issues status/huboard](http://huboard.com/OneBusAway/onebusaway-iphone)
[Closed issues assigned to this milestone](https://github.com/OneBusAway/onebusaway-iphone/issues?milestone=3&page=1&state=closed)

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