Add support for OpenGraph Calls and Friend Invites

Android Only
Merge branch 'master' of https://github.com/debarko/facebook
Update Open Graph Calls
Bug Fix: Namespace and Action not set
iOS OG Bug
Merge branch 'master' of https://github.com/debarko/facebook
Publish Permissions Bug Fix
Fix: Publish actions requested repeatedly
Get Logout Session from Cache
Merge branch 'master' of https://github.com/debarko/facebook
Open Session from Cache during Logout in iOS
Proper Logout of FB in iOS
Slip of Commit in IOS OG URL Encoding
Multiple OG Req
Merge branch 'master' of https://github.com/debarko/facebook
Slip of Mind
iOS Small Bug in OG Publish Permission
Send back proper error values
Handle better ios auth errors
Remove logger