Add SFBillIdentifier class and SFFullTextViewController
Move some new code over to use the SFBillIdentifier
The actual full text view controller
Actually show the full text controller on button press. Also disable buttoon if no full text versions are available.
Button to go from vote to bill. Bug in roll call loading that prevents going back.
Fix issue going back to vote from bill. Closes #258.
Fix merge conflict in project.pbxproj
Update SFBill model version
Merge branch 'develop' into feature/inappfulltext

* develop: (25 commits)
  Update to v1.2-alpha
  Add app version number to settings screen and feedback email subject.
  Added explanatory text for missing bill summaries, per #254.
  Add release info for 1.1.2, version bump.
  Initial implementation of search on bill codes, per #244.
  Added methods for normalizing a string to a bill code and checking a string for a bill code. Closes #155.
  Updated version of MapBox SDK, TestFlight, et al. This introduces issue w/ cocoapods. See #253 for workaround.
  Fix duration for error message convenience methods.
  Changed various SF*Service classes to return an empty array for 0 results versus nil in case of an error. Refactored various viewcontrollers to handle the empty array and nil appropriately. SFMessage improvements so we can display some messages when there are errors fetching data.
  Use TSMessage error instead of UIAlertView. Override defaultViewController so [TSMessage showInternetError] works.
  Added SFMessage error messages to bills.
  Fix reference that should be weak.
  Added some initial error messages into section viewcontrollers, SFVoteDetailViewController.
  Set up some default error message methods, make SFMessage available everywhere.
  Error handling for nil returned from SFBillService.
  Don't attempt to retrieve votes if billId is nil.
  Made SFRollCallVoteService return nil when 0 votes are returned. Updated SFVoteDetailViewController and SFBillSegmentedViewController to handle nil cases.
  Improvement to build numbering. No more Congress-Info.plist updates. Congress.xcodeproj script generates simple buildnumber.xcconfig file that contains BUILD_NUMBER var, which gets ingested by the xcconfig files for the various build types. boom.
  Added method for setting buiguideId on SFLegislatorSegmentedViewController so it can trigger the network request after the view has loaded. Should make transition from SFLegislatorTableViewController and SFBillDetailViewController (sponsor) faster, but show loading view on the SFLegislatorDetailView.
  Fix bad ARC auto-conversion choices. SFCellData needs to retain these objects.
  ...
Fix merge conflict. Change of wording on in vote date on vote detail view.
Update Crashlytics framework
Merge branch 'develop' into feature/committees

* develop:
  Update Crashlytics framework
Merge pull request #261 from sunlightlabs/feature/votetobill

feature/votetobill - Add button to view bill from vote screen
Merge pull request #255 from sunlightlabs/feature/inappfulltext

feature/inappfulltext
fix merge conflict in pbxproj
Add committees to favorites list
More committee work. Get some basic details showing, subcommittees, and other internal stuff