Move export tab to menu

[Sinderella]

A new dedicated class has been created to deal with all the menu actions. Some code has been remove during the process.

• [x] Move import/export settings to menu
• [x] Move export logs to menu
• [x] Remove export tab
• [x] Document and comment added code

@justinmoore I am not finished with this PR as you can see in the task list above. I'd like to see what is your feedback in terms of the coding style and how I structure the code. It is my first time contributing to an open source project, and I never had experience dealing with swing before, so I am not certain if it is the right pattern that I am using in this commit.

[justinmoore]

Hey @Sinderella ,

Thanks again for the contribution.

The only comment I have is that I would call the getCurrentAutoRepeater() method getSelectedAutoRepeater() and I'm pretty sure you can simplify the body of that method to:

public AutoRepeater getSelectedAutoRepeater() {
    return ((AutoRepeaterTabHandle) mainTabbedPane.getTabComponentAt(mainTabbedPane.getSelectedIndex())).autoRepeater;
}

Now that I look at that code I should probably have made the AutoRepeater that the AutoRepeaterTabHandle holds private and made a getter but whatever.

Everything else looks great! I look forward to merging this.

Thanks, Justin

[Sinderella]

Hello @justinmoore,

I have finished working on this PR. Let me know if you need me to make any change, else we can close #28. 😆

Cheers, Thanat

[justinmoore]

Everything looks great, I'll merge this in a minute.

Thanks! Justin