Fix issue 351: Vertical text alignment

NIAttributedLabel.verticalTextAlignment stopped working correctly in
commit c856b9b.
[docs] Fix header so that subdomain tracking analytics aren't messed up.
[NISubtitleCellObject]
NISubtitleCellObject needs to override its superclass's designated initializer.
Merge pull request #423 from jverkoey/designated_initializer_fix

[NISubtitleCellObject]
Fix the analyzer error in NIAttributedLabel under XCode5.
Merge pull request #426 from jverkoey/xcode5

Fix the analyzer error in NIAttributedLabel under XCode5.
[NIAttributedLabel]
Fix a new NIAttributedLabel analyzer warning in Xcode 4.6.3.
Merge pull request #427 from jverkoey/analyzer_warning

[NIAttributedLabel] Fix analyzer warning with textFrame.
[NIOverviewGraphView]
Guard against zero x/y ranges to prevent runtime assertions on iOS 7.
Merge pull request #429 from jverkoey/graph_view

[NIOverviewGraphView] Guard against zero x/y ranges to prevent runtime assertions on iOS 7.
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.