Add support for leading and trailing view edges.
Add demo of leading and trailing view edges.
Updating project to support Arabic localisation. Arabic text sourced from http://generator.lorem-ipsum.info/_arabic.
Updated project file.
Merge remote-tracking branch 'upstream/master'

# By Tyler Fox
# Via Tyler Fox
* upstream/master:
  Fix minor issues with example project
  Update behavior of recursive constraint removal method to exclude intrinsic content size constraints
Supporting leading/trailing edges in auto-layout in preference to left/right edges.
Offsets don't need to be negative now.
Fix some issues with the addition of leading and trailing

- Fix issues with the absolute positioning method (was not actually respecting the edge passed in to it) and add support for leading/trailing edge
- Add support for right-to-left languages when using the method to distribute subviews with fixed size
- Add support for leading and trailing when aligning views to each other
- Fix up some comments
- Showing the status bar on iOS 7 requires that the content receive an additional top inset so it does not appear underneath the status bar