MS-615 Inject JS to listen to Pitbull data in SDK

Buffer data from JS
Intercept mobile web on-click callback
Save compressed screenshots of creative
Moved mediatedAd validation to ANMediationAdViewController
MS-690 Parse for auction_info for mediated ads
New ANPBBuffer class
Added non public-facing way to toggle mobile environment in ad fetcher
Save environment in persistent settings.
Display persistent settings in UI
Fix for environment change for install tracker pixel.
Merge branch 'Environment-Toggle-SDKApp'

Conflicts:
	sdk/internal/ANGlobal.h
App Version 1.161

pre-iOS 7 friendly view capture
MS-699 Disable PSAs by default
Implemented click overlay view for iOS
Merge branch 'Click-Overlay'
MS-711 Mediation adaptors for MoPub and Facebook
SDKs must be downloaded and included separately
Add ClickOverlay to binary project
MS-709 Ignore all but last result_cb responses
Millennial mediation main thread dispatch delegate calls
SDK Version 1.17
Merge RC1.17 to Github