Create Nammu GUI mockup in Jython with basic file edition functionality

[raquelalegre]

Create a GUI in Jython using Maven and PyOracc following the layout in the mockups agreed in the last meeting that follows a MVC architecture.
It should have a menu, a toolbar, a text area and a console for log display.
The menu and toolbar should display these options for the user to choose:

File
 ├── New
 ├── Open
 ├── Save
 ├── Close
 └── Quit

Edit
 ├── Undo
 ├── Redo
 ├── Copy
 ├── Cut
 └── Paste

ATF
 ├── Validate
 └── Lemmatise

Window
 ├── Model View
 ├── Unicode Keyboard
 ├── Hide/Show Console
 ├── Hide/Show Toolbar
 └── Preferences

Help
 ├── Help
 └── About

[raquelalegre]

Layout done, although still needs refactoring and prettifying.
Basic file handling functionality (new/open/save/close) is being done.

[raquelalegre]

New/Open/Save/Close done here.