Update SFPushNotificationManager.m

Updated to account for User Notification in iOS 8.0
Update SFPushNotificationManager.m

Removed logger import
Update SFPushNotificationManager.m

Added conditional for user notification types.
Merge pull request #735 from Sundog-Interactive/unstable

Update SFPushNotificationManager.m
In progress: Adding SalesforceSDKManager
In progress: more SDK manager
Minor changes
Adding some validation, errors
Adding workflow
Adding auth, user account delegate functionality
Updating RestAPIExplorer's AppDelegate to consume SalesforceSDKManager
Interim checkin: app foregrounding
Implementation of foregrounding
Updates for foregrounding, passcode cancellation
Comments, copyrights, etc.