Fix Instapaper Root API issue

Fixed issue that was causing login request to return a 403.
Merge pull request #110 from hank8903/master

Fix Instapaper Root API issue
Fixing issue #106 - Copying URLs absoluteURL in SharingController

* Copying the absoulte URL in SharingController initWithURL: method
Merge pull request #112 from alexfish/master

Fixing issue #106 - Copying URLs absoluteURL in SharingController
Begin iOS 7 support. On iPhone, most views render correctly, but there are many bugs. iPad is significantly worse.
Make profile page look reasonable on iOS 7.
Update HNKit.
Remove TODO; using GitHub Issues now.
Add the ability to swipe to the left on a submission to jump to the destination.
Update HNKit.
Improve iOS 7 compatibility. Basic navigation works without any issues with navigation bars.
Exclude unwanted new iOS 7 activity types.
Clean up text input and compose controller, support iOS 7 and iOS 6.
Fix status bar styling during iOS 7 launch. Test on iOS 6, no change.
Orange toolbar for comment threads. Fix clipping of divider line.
Fix swipe gesture on iOS 7. Due to the navigation controller hacks, pushing view controllers must always go through the AppDelegate extensions.
Move shadow into DetailsHeaderView itself, simplifying CommentListController.
iOS 7 styling for comments header views.
Fix iPad toolbar styling on iOS 7, update inline styling for iOS 7.
Fix the styling of browser toolbars on iOS 7. Also improve the spinner contrast on iOS 6 iPad.