Pre-Queue change
Major cleanup in the code

- algorithms have their own classes
- cleaned up ControllerBean
- the core works mostly as desired

TODO:
- minor cleanup
- random process apearence (will be useful with SJF and RR)
- exiting the methods with Thread.sleep() early
- ... the rest of the algorithms D:
Round Robin starting to work _slowly_

 - added UltraLinkedList class
 - RR still needs some love!