added no args constructor to all serialized classes; updated closeQuiz method(still not working properly)
service look up in set up client and player client extracted to a new connectToServer method; menus cleaned up and improved; persist method on server, now flush()
package with menu classes-enum class for menu actions, static method to display menu and menu item class
changed mainMenu to use TextMenuItem and enums
changed setUpMenu to use TextMenuItem and enums; added some TODOs for further functionality
changed playerMenu to use TextMenuItem and enums; added some TODOs for further functionality
TODO added for unique id
registry set up moved into the main method of Server; ServerLauncher to be deprecated
Merge branch 'master' of https://github.com/LiliyaStefanova/Quiz