broadcast receiver registered in onResume()
AndroidSecureStorage replaced with newer (but not latest) version of Android's KeyStore (tag android-4.2.2_r1.2). This one is the last that still uses local sockets and does not bind service.
AndroidSecureStorage.test() removed. Instead of it, the original Android's KeyStore.state() is used.
partial and non-working implementation of support for Android 4.3
deleted unused TrustService
all previous functionality works again with new implementation of secure storage (for Android up to 4.2.2 only)
keywords gathered from Keywords class
functionality works also under Android 4.3 but multiple identities cannot be installed (previous are overwritten)
Multiple certificates can be installed. Already existing certificates are not reinstalled as new certificates, but only the public part of certificate is compared to existing entry. The private key cannot be compared so this check is removed from identity installation.
Toast messages simplified
logging