Fix a major name mangling problem.

- Naming a global constant “Left”, “Right” and “None” is really not a
very good idea. It’s like playing Russian roulette. 

Signed-off-by: Aron Cedercrantz <aron@cedercrantz.se>
Merge branch 'master' of https://github.com/opfo/app

* 'master' of https://github.com/opfo/app: (21 commits)
  Auxiliary db is now updated when new posts and users are added
  Remove SwipeView from Podfile.
  Fix hidding footer labels on missing matches.
  Add displaying of related tags.
  Add wrapper around fixed footer.
  Add removing tag selection functionality.
  Display sub-controller showing selected tags.
  Add sub-controller handling selected tags.
  Add fixed header scrollview to collection view's wrapper.
  Fix passing tagNames into query and externalize getTagNames.
  Pass query and search string into questions controller.
  Load questions by tags and render footer.
  Change tag-browser footer and add to collection-view.
  Add tag-browser footer to collection view.
  Add footer for tag-browser showing question-match-count.
  Add SwipeView to podfile.
  Overwrite setter and move IBOutlet setting to view.
  Add collection header for selection state.
  Add collection view header and change insets.
  Add tag loading and displaying.
  ...