Merge pull request #90 from liafailboy/working

categoires
Removed default category from being displayed
Merge pull request #91 from andhieka/working

Removed default category from being displayed
bugfix:
Merge pull request #92 from andhieka/working

bugfix in category display
updated readme
Refactor: Moved Category, Date and Task to list.model package
Refactor: Moved Utilities to list.util package. And removed .orig files committed accidentally.
Refactor: Moved IUserInterface to list.view package. Removed unused imports
Added main to Controller
Converted project to Maven project
Modified CloseCommand to use Platform.exit()
Added Maven dependency for JChronic date parsing library
Deleted MainApplication.java
Merge pull request #93 from andhieka/working

Refactor packages to follow MVC Model
bugfix
Merge pull request #94 from andhieka/working

bugfix
added four image files for the icon of the buttons. Changed the whole structure of the fxml file for the GUI. Put image icon in the button in GUI.