Imrpoved undo

app/src/main/res/layout/activity_welcome.xml

@@ -1,6 +1,8 @@
 <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
-    xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent"
-    android:layout_height="match_parent" android:paddingLeft="@dimen/activity_horizontal_margin"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    android:paddingLeft="@dimen/activity_horizontal_margin"
     android:paddingRight="@dimen/activity_horizontal_margin"
     android:paddingTop="@dimen/activity_vertical_margin"
     android:paddingBottom="@dimen/activity_vertical_margin"
@@ -22,11 +24,11 @@
         android:onClick="onNewClick" />
 
     <Button
-        android:layout_width="match_parent"
+        android:layout_width="fill_parent"
         android:layout_height="wrap_content"
         android:text="@string/load_character"
         android:id="@+id/loadCharacter"
-        android:onClick="onLoadClick"
-        android:layout_marginTop="10dp" />
+        android:onClick="onLoadClick" />
+
 
 </LinearLayout>

app/src/main/res/menu/menu_main.xml

@@ -1,12 +1,12 @@
 <menu xmlns:android="http://schemas.android.com/apk/res/android"
     xmlns:app="http://schemas.android.com/apk/res-auto"
     xmlns:tools="http://schemas.android.com/tools" tools:context=".MainActivity">
-    <!--TODO: create fancy responsive toasts-->
+    <!--TODO: create fancy responsive toasts for undo's-->
     <item
         android:id="@+id/action_undo"
         android:title="@string/action_undo"
         android:orderInCategory="1"
-        app:showAsAction="never"
+        app:showAsAction="ifRoom"
         android:icon="@drawable/ic_action_undo"/>
     <item
         android:id="@+id/action_cure"