Rewrite of MultiBackend driver with separate functions for all ILS driver methods. Fix to checkCapability to work properly with drivers using __call() magic method and more data to supportsMethod() for better decision-making including the possibility to use supportsMethod also without _call(). Updated MultiBackend tests.
Merge pull request #200 from KDK-Alli/multibackend2

Rewrite of MultiBackend driver with separate functions for all ILS drive...
Refactored Auth\Manager to use dependency injection.
Separated ILS authentication logic from Auth\Manager.
Fix broken tests.
Added tests.
Style fixes.