Style parameters coud be refactored

[mgermerie]

I believe the text and icon parameters in Style could be redesigned. In deed, the both describe content of labels. text is for all eventual text written within a label and icon for an eventual icon. Therefore, we could have the following structure :

Style: {
    label: {
        text: {
            // all the current Style.text properties could go here
        },
        icon: {
            // all the current Style.icon properties could go here
        },
        // other eventual properties could be added directly to Style.label
    }
}

This structure would offer a more rigorous naming for Style properties. It would also grant the possibility to add properties that concern labels but which are not specifically related to labels text or icon.

The structure given here is an example, and the existence of a better structure should be checked before refactoring anything.