Feature Request: Rework button graphics generation

[dnmeid]

1. Let's unify the button styles further. In my opinion a button should have layers, a color background layer, a png layer and a text layer. So we don't need two different button styles anymore. And we could combine background colors with transparent pngs. And maybe for the future we can offer the ability to let the user add more layers or give more options to layers or more types of layers.
2. There should be an option to resize pngs and alignment control option. Resizing should not be done during upload, but during presentation.
3. Feedbacks could also use one or more layers, let's say a feedback is writing some text into a text layer and the user can have another textlayer writing his own text.
4. Button states. Let's give each button the ability to have more than one design. This would make much things much easier. Each state has all the options of the button design in it, so a module or the user can prepare many states and switch between them only with changing the state. Great for toggle with state 0 and state 1. But there could be more states, feedback can also be used to switch states, so it is easy to implement feedback and at the same time it is comprehensible to the user and easy adjustable.