added setChromeTitle for subclassing

setChromeTitle allows individual titles in a subclass
added setChromeTitle for subclassing

override setChromeTitle in a subclass for individual titles
Merge remote-tracking branch 'upstream/master'
Changed Object type --> causes compiler fault
Fixed activeRequest-queue - adding of the identifier key was missing
b2
Fix bug where highlight for a tapped link in NIAttributedLabel was rendered at the wrong y origin when using NIVerticalTextAlignmentMiddle (and probably NIVerticalTextAlignmentBottom as well).
Simplify code that offsets highlight rectangle.
Merge pull request #288 from bartvandendriessche/master

NIAttributedLabel: highlight for link drawn at incorrect y offset
[models] Don't modify the cell accessory type for tap actions.
Fixed issue when setting cache size of thumbnail and high quality image caches.
Added lineHeight attribute to NIAttributedLabel
[models] First pass.
[models] Add addObjectsFromArray: method to NIMutableTableViewModel.
[models] Flesh out unit tests for mutable table models.
[models] Document the mutable table view model methods.
Update deployment target to 5.0.
[models] NIMutableTableViewModel docs and added insertSectionWithTitle.
[models] Add addObject:toSection:.
[core] Update namespace header.