Added more unit tests for crypt class
Added new method for generating 16 character pseudo-random initialisation vectors
Started writing new methods for handling legacy keys and en/de/re cryption
Added comments to lib/filecache.php explaining expected $path type
- Added methods for sealing data with multiple keys
- Added method for encrypting data, generating iv and keyfile, and returning both
- Added 6 unit test cases (containing 12 tests) for Crypt class
- Commented out old unit tests for now