Added sorting behaviour, classloader accessible though
controller.

Next time ill work on dateformat options.
Merge branch 'master' of https://github.com/kankoli/to-do-manager.git

Conflicts:
	todo_53V3N/bin/shared_actions/SortTaskAction.class
	todo_53V3N/bin/view/main_window/SortingBar$SortingBarMouseListener.class
	todo_53V3N/bin/view/main_window/SortingBar.class
	todo_53V3N/src/shared_actions/SortTaskAction.java
	todo_53V3N/src/view/main_window/SortingBar.java