Fix issue 351: Vertical text alignment

NIAttributedLabel.verticalTextAlignment stopped working correctly in
commit c856b9b.
Merge pull request #374 from mmorearty/patch-vertical-text-alignment

Fix issue 351: Vertical text alignment
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
Merge pull request #481 from jverkoey/cpp

Specify C external linkage for NISnapshotRotation functions
Make NISegmentedControlFormElementCell layout take content padding into account.
Merge pull request #482 from jverkoey/segmented_control_layout

Fix NISegmentedControlFormElementCell layout
Print out object's address to make debugging easier.
Merge pull request #445 from muhtasib/print_address

[NIOverview] Make inspector print object's address
Fix typo in NIOverviewPageView.