Put DB encryption key methods in TSEncryptedDatabase
Fix some of the DB unit tests
Remove UNENCRYPTED_LOCAL_STORAGE
Use iOS 7 base64 methods and fix memory leaks
bringing in db related changes FREEBIE
Merge branch 'master' of https://github.com/nabla-c0d3/TextSecure-iOS into nabla-c0d3-master
added default catchall exception if error handling in db goes awry FREEBIE