Update start screen for 4.8

Add mirror modeling tool to main toolbar

content/news.json

@@ -5,25 +5,25 @@
 		"layout": "vertical",
 		"insert_after": "splash_screen",
 		"text": [
-			{"text": "Welcome to Blockbench 4.7", "type": "h2"},
-			{"text": "The Reference Image Update!", "type": "h1"},
-			{"text": "Check out the [full changelog](https://github.com/JannisX11/blockbench/releases/tag/v4.7.0)!"}
+			{"text": "Welcome to Blockbench 4.8", "type": "h2"},
+			{"text": "The Plugin Browser Update!", "type": "h1"},
+			{"text": "Check out the [full changelog](https://github.com/JannisX11/blockbench/releases/tag/v4.8.0)!"}
 		],
 		"features": [
 			{
-				"image": "https://web.blockbench.net/content/thumb_references.png",
-				"title": "Reference Images",
-				"text": "Load reference images into the program, arrange them to your liking, or use them as blueprints!"
+				"image": "https://web.blockbench.net/content/plugin_browser.png",
+				"title": "Plugin Browser",
+				"text": "Redesigned plugin browser! More info about plugins, and other new features!"
 			},
 			{
-				"image": "https://web.blockbench.net/content/thumb_mesh_edit.png",
-				"title": "Mesh Improvements",
-				"text": "Proportional Editing, glTF Armature export, UV features, and much more!"
+				"image": "https://web.blockbench.net/content/mirror_modeling.png",
+				"title": "Mirror Modeling",
+				"text": "Model one half of your model, the other side updates automatically!"
 			},
 			{
-				"image": "https://web.blockbench.net/content/thumb_attachables.png",
-				"title": "Attachable Preview",
-				"text": "Position and animate attachables for Minecraft Bedrock Edition with live preview"
+				"image": "https://web.blockbench.net/content/outliner_search.png",
+				"title": "Searchable Outliner",
+				"text": "Find your elements quickly with the new search bar!"
 			}
 		]
 	}

js/interface/actions.js

@@ -2286,6 +2286,8 @@ const BARS = {
 				'loop_cut',
 				'create_face',
 				'invert_face',
+				'_',
+				'mirror_modeling',
 			]
 		})