MOBILE-2964, MOBILE-2975, MOBILE-2979 & MOBILE-2986

MOBILE-2964: Workflow detection request failure should not prevent SDK session creation
MOBILE-2975: Unable to retrieve comments on iPad alfresco app
MOBILE-2979: Any HTTP error is being reported as a permissions issue (translated strings to follow)
MOBILE-2986: Uploads consistently fail on iOS 8

Also updated AlfrescoSDK to 1.3.2 and fixed warning due to use of iOS 8 SDK.