Utils: Add a basic implementation of an EncryptionManager which allows to store the password encrypted.
This use the latest AndroidKeyStore from Android M and allow to store the key securely.
<?xml version="1.0" encoding="utf-8"?>
<resources>
<!-- MemorizingTrustManager library -->
<string name="mtm_accept_cert">Accept Unknown Certificate?</string>
<string name="mtm_decision_always">Always</string>
<string name="mtm_decision_once">Once</string>
<string name="mtm_decision_abort">Abort</string>
<string name="mtm_notification">Certificate Verification</string>
</resources>