replace menu icon shoing vertical dots with one showing horizontal dots

deltachat-ios/Assets.xcassets/ic_more.imageset/Contents.json

@@ -0,0 +1,21 @@
+{
+  "images" : [
+    {
+      "idiom" : "universal",
+      "scale" : "1x"
+    },
+    {
+      "filename" : "dots-horizontal-circle-outline_3x.png",
+      "idiom" : "universal",
+      "scale" : "2x"
+    },
+    {
+      "idiom" : "universal",
+      "scale" : "3x"
+    }
+  ],
+  "info" : {
+    "author" : "xcode",
+    "version" : 1
+  }
+}

deltachat-ios/Assets.xcassets/ic_more_vert.imageset/Contents.json

@@ -1,15 +0,0 @@
-{
-  "images" : [
-    {
-      "idiom" : "universal",
-      "filename" : "more_vert.pdf"
-    }
-  ],
-  "info" : {
-    "version" : 1,
-    "author" : "xcode"
-  },
-  "properties" : {
-    "preserves-vector-representation" : true
-  }
-}

deltachat-ios/Controller/WelcomeViewController.swift

@@ -40,7 +40,7 @@ class WelcomeViewController: UIViewController, ProgressAlertHandler {
     }()
 
     private lazy var moreButton: UIBarButtonItem = {
-        return UIBarButtonItem(image: UIImage(named: "ic_more_vert"),
+        return UIBarButtonItem(image: UIImage(named: "ic_more"),
                                style: .plain,
                                target: self,
                                action: #selector(moreButtonPressed))