Adding Czech localization

Signed-off-by: Ondrej Rafaj <ondrej.rafaj@fuerteint.com>
Calling passcodeWasEnteredSuccessfully when successfully authenticated via Touch ID, also switching to GCD to execute methods on main thread

Signed-off-by: Ondrej Rafaj <ondrej.rafaj@fuerteint.com>
Merge pull request #93 from Ridiculous-Innovations/master

Adding Czech localization and fixing issue with Touch ID