Merge branch 'release/3.8' into develop
Fixes crash when canceling navigation transition

It seems viewDidDisappear can get called even when viewDidAppear never
was. Filed a radar about this, but let's use the viewWill* methods
meanwhile
Fixes #42 - Setting the backBarButtonItem on EditPostViewController when pushing PostMediaViewController so the Back text is set the right way (instead of using nav bar title overrides)
Fixes #70 - Added action handler for UIPageControl selection changes to NUX
Fixes #70 - Display remove featured image popover from the correct superview
Fixes #74 - Crash when tapping the bookmark icon twice in a row in the reader (dealloc called on a popover while still visible)
Merge branch 'develop' into release/3.8.1
Fixes #103 - No title on previous view causes no back button to appear - added a backBarButtonItem to view controller before pushing categories controller.
Updated the README to reflect recent changes in issue reporting and blog locations
Missed a carriage return in README.md file
Merge branch 'develop' into release/3.8.1
Don't crop gravatars on notification cells

resolves #96
Don't override note data on updateAttributes

`updateAttributes:` might get called with a partial response (e.g. only
id and unread fields included) and we'd lose data about the note.

resolves #100, probably resolves #101
Better position of switch in table cells

resolves #94
Make web view toolbar buttons white on iOS 6

resolves #93
Merge branch 'release/3.8.1' into develop
Fixes #102 - Added UIScreenEdgePanGestureRecognizer to screen (iOS 7 only) to handle making the sidebar appear with the off-edge swipe.
Bump version to 3.8.1
Updated translations
Merge branch 'release/3.8.1'