Add CryptoServiceTest - encryption reversability and not too simple
commons-codec dependency added for Base64 encoding
AESCryptoService added - using AES for encrypt/decrypt
AESCryptoServiceTest added
Extracted settings line splitting to key/value in separate method
Test added for allowing "=" sign in settings' values
Add support for "=" sign in setting's value
CryptoKeyService & JKS based implementation added