The controller class has some important methods which may be
required in multiple parts of the code. Now that class is a
singleton (that may change in the future).
The core parts have been moved to src/core.
Now the tray Icon can be disabled by the controller.
I need to reimplement a new notification system due to its
dependency with the tray icon, they are disabled in this actual
commit.
The design was defective and I didn't expect the popularity of the project. After these changes the code will be more mantainable and understandable.
Among the changes we can see:
- A better code structure
- Decoupled button widget from its logic
- More code reuse
- Easier way to add buttons
- Specialized classes
