Fix issue with lock alpha channel on large brushes

Hide Bedrock Block format on start screen
Update Font Awesome

js/io/formats/bedrock.js

@@ -1234,6 +1234,7 @@ var block_format = new ModelFormat({
 	category: 'minecraft',
 	extension: 'json',
 	icon: 'icon-format_bedrock',
+	show_on_start_screen: false,
 	rotate_cubes: true,
 	box_uv: false,
 	optional_box_uv: true,

js/texturing/painter.js

@@ -870,7 +870,7 @@ const Painter = {
 		if (Math.isNumber(base)) base = Jimp.intToRGBA(base)
 		if (Math.isNumber(added)) added = Jimp.intToRGBA(added)
 
-		if (added.a*opacity == 1) return added
+		if (added.a*opacity == 1) return {r: added.r, g: added.g, b: added.b, a: added.a};
 
 		var original_a = added.a
 		added.a = added.a*opacity