Fix issue 351: Vertical text alignment

NIAttributedLabel.verticalTextAlignment stopped working correctly in
commit c856b9b.
Fixed debugging functions for Objective C++
Merge pull request #431 from jessevb/master

Fixed debugging functions for Objective C++
[pagingscrollview] Add moveToPageAtIndex:animated:updateVisiblePagesWhileScrolling: method.

This makes it possible to show the pages that aren't n-1 or n+1
from the original page during an animation.
[NIDebuggingTools]
Untangle linkage specification from other macros.
Merge pull request #440 from jverkoey/cleanup

[NIDebuggingTools] Untangle linkage specification from other macros.
Merge pull request #374 from mmorearty/patch-vertical-text-alignment

Fix issue 351: Vertical text alignment
Update iOS7 Release date comment
Implement indexPathForObject: on NITableViewModel and NICollectionViewModel.
Add function docs for indexPathForObject:
Merge pull request #451 from jverkoey/indexPathForObject

Implement indexPathForObject: on NITableViewModel and NICollectionViewModel.
Fix uri scheme for Google Chrome
Merge pull request #469 from ahmet/master

Fix uri scheme for Google Chrome
Add vertical dragging support for NIOverlay.
Merge pull request #475 from jverkoey/debug_view

Add vertical dragging support for NIOverlay.
Implement -[NITitleCellObject init] and make it call initWithTitle:image:
so that calls to init in descendant classes don't skip designated initializers
along the inheritance hierarchy.
Merge pull request #477 from jverkoey/NITitleCellObjectInit

Implement -[NITitleCellObject init]
Set edgesForExtendedLayout for iOS7
Merge pull request #480 from dlackty/fix-iOS7-web-controller

Fix NIWebController view frame under iOS7
Specify C external linkage for NISnapshotRotation