- Fixed null userID in getLoginStatus if app is force stopped
- Fixed no return call for login
removed debug logs
removed unnecessary final variables
Merge fixes by aogilvie
Merge branch 'fix-userID-null-on-init' into develop

Conflicts:
	platforms/android/src/org/apache/cordova/facebook/ConnectPlugin.java
switched to isOpened which will check OPENED_TOKEN_UPDATED and OPENED Categories
Merge pull request #708 from aogilvie/fix/android-null-userId

Fix/android null user
Upgrade to iOS SDK 3.19.0
Merge branch 'upgrade-ios-sdk-to-3.19.0' into develop

Conflicts:
	platforms/android/src/org/apache/cordova/facebook/ConnectPlugin.java