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[*] using fixed version of jSCEP library (BC and Oracle's JCA implementation use distinct default transformations for RSA)
[+] License at the beginning of files and javadoc for classes
[+] added UnknownPayload class for valid but unsupportable payloads
[~] SecondPhaseTask was a little bit refactored to be much readable. It has basic SCEP support for now
[~] CryptoUtils: improved createCert(), added plist key usage to BC key usage converter
[~] Custom SCEP transport now have access to application context (may be useful)
Merge remote-tracking branch 'remotes/origin/master' into develop-demitsuri