fix reported exception when fetching message body but the folder share was deleted from cache
Merge branch 'master' of https://github.com/cryptoheaven/CryptoHeaven.git
Fix background file upload on android 4.4
There was a problem with compressed stream call to flush() after finish()... it worked in 4.3 but broke in 4.4 
Trace changes to include exception hooks for easier Android debugging.