Customizer duplication bug

[syntaxerror]

When using a customizer.json with basic settings, meaning body background-color and color, those values are saved twice in customizer.css

T.ex. this basic customizer.json:

{
    "general": {
        "title": "text_general_title",
        "description": "text_general_description",
        "control": {
            "sitename": {
                "selector": "#logo a"
            }
        }
    },
    "colors": {
        "title": "text_colors_title",
        "description": "text_colors_description",
        "control": {
            "container_background-color": {
                    "type": "color",
                    "label": "text_colors_container_background_label",
                    "default": "#bdc3c7",
                    "selector": "body"
            },
            "container-color_color": {
                    "type": "color",
                    "label": "text_colors_container_color_label",
                    "default": "#666666",
                    "selector": "body"
            }
        }
    },
    "images": {
        "title": "text_images_title",
        "description": "text_images_description",
        "control": {
            "logo": {
                "selector": "#logo a img"
            }
        }
    }
}

When saving in Customizer, it will generate this customizer.css:

body { 
 	font-family : inherit; 
 } 

 body { 
 	width : 100%; 
 } 

 body { 
 	background-color : #bdc3c7; 
 } 

 body { 
 	background-color : #bdc3c7; 
 } 

 body { 
 	color : #666666; 
 } 

 body { 
 	color : #666666; 
 }

This you should be able to confirm by saving Second theme in Customizer.

The problem is most likely because those are loaded by the controller in the getCustomizerItem function:
https://github.com/arastta/arastta/blob/master/admin/controller/appearance/customizer.php#L161-L207

## Another issue in this is the body font being sett to inherited, witch is giving us display issues on t.ex. a Mac.

If you save Second in Customizer, without selecting a system or Google font, it will be sett to 'inherit' and giving display issues. It overrides this: https://github.com/arastta/arastta/blob/master/catalog/view/theme/second/stylesheet/stylesheet.css#L2

Also, in Second, Arastta Core, you get duplicates:

There shouldn't be those defaults in core, as designers should have the freedom to add what they prefer: https://github.com/arastta/arastta/blob/master/admin/controller/appearance/customizer.php#L161-L207

[denisdulici]

Can confirm this.