Changed QblPrimaryPublicKey to public and added getter
Changed constructor of QblPrimaryKeyPair to public
Changed more key getter to public
Merge pull request #72 from L-Henke/keyRework
Changed more key getter to public
Merge pull request #73 from L-Henke/keyRework
ModuleManager: Implementation of loading new Modules by a Class<?> instance

Also a test was added to make sure the instanciation of a module works.