Replays fully implemented

Close #59 - Replays are now fully integrated and can push and pull data from the server

FlxG.as: Removed replay code (migrated to its own class)
GameRegistry.as: Added variable to indicate replay is being started, added field for storing replay data
PauseMenu.as: Attempting to display text (IN PROGRESS)
InputText.as: Added textbos functionality (HACKY, NOT IN RELEASE CODE)
ReplayHandler.as: Handles all server communication related to replays
GameState.as: Slight modifications to fit new replay functionality
MenuState.as: Added Replay button (click button then enter replay id)
Merge branch 'master' of github.com:cullensu/Capstone