return remaining tries of PIN verification in MSE:Set AT
use a 10 digit puk
better PIN handling

- avoid overloading of the unblocking command, instead perform resuming
  the pin automatically.
- implemented cache for npa card driver
- added support for eSign PIN verification
- addes support for get pin info cmd
implemente PKCS#15 emulator for nPA
fix return code for blocked PIN
ignore 'dirty' submodule opensc
use unified names for PACE secrets