Adding back in some iOS 7 compatibility fixes.
Fixes IOS-167 Tapping Survey text entry cell results in haphazard scrolling

The view hierarchy changed a lot in iOS 7.
Fixes IOS-166 (Status bar overlap) and IOS-184 (image action sheet)

Reworked how we set up title bars, instead using navigation controllers. Also reworked the flow of the modal dismissal flow on iOS 5+.
Setting and unsetting the parent window's tintAdjustmentMode.
IOS-160 Red glow under FeedbackDemo keyboard

This removes the attachment drawer in favor of just a camera button. Since we only have one action at the moment, I feel the camera buttom makes more sense.

This also resolves IOS-112 Re-do attachments drawer to show only available actions.
IOS-171 Text entry for messages should be redone for iOS 7

Redoes the text entry to look like iOS 7 styling. The text view entry is pretty wonky still, but that will be worked on separately.
Fixing iOS 6 compatibility.
Modified PSD.
Merge branch 'master' into iOS7UIRefresh

Conflicts:
	ApptentiveConnect/ApptentiveConnect.xcodeproj/project.pbxproj
	ApptentiveConnect/art/text_input_bg_ios7.psd
	ApptentiveConnect/source/Custom Views/ATSimpleImageViewController.m
	ApptentiveConnect/source/Message Center/ATMessageCenterViewController.m
	ApptentiveConnect/source/Message Center/ATMessagePanelViewController.m
	ApptentiveConnect/source/Surveys/View Controllers/ATSurveyViewController.m
Moving some of the data source methods into a new class.
Factoring out common view controller code.
First cut at cells in the container views.
First cut at IOS-283 New automatic message cell design
First cut at IOS-282 New message bubble design

Also properly sizes things on rotation. Had to resort to a bit of a kludge though.
Fixing some autolayout constraints errors.
Refinements.
Make message view always bounce vertically.
Basic dev text cell and user file cell.
Attempt at animating user icons. Totally failed.
Got the user icons animating properly.