Rename "view" module to "frontend"

[Kazuo256]

Because it also deals with sound and other stuff.

[rilifon]

But isn't the name view from the programming pattern "Model-View-Controller" where the view represents all aspects of graphics, audio and other "frontend" things?

[Kazuo256]

True.

I guess it's just my random OCDs going off on their on. I'll leave this as a discussion issue and remove it from the current milestone.