minor fixes

app/src/main/java/adrienmalin/pingpoints/MainActivity.kt

@@ -103,6 +103,7 @@ class MainActivity : AppCompatActivity() {
         if (game > 0) {
             undo?.isVisible = true
         }
+        redo?.isVisible = false
     }
 
     fun reloadState() {

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

@@ -25,7 +25,7 @@
 
         <android.support.design.widget.TextInputEditText
             android:id="@+id/inputLeftPlayerName"
-            android:layout_width="match_parent"
+            android:layout_width="150dp"
             android:layout_height="wrap_content"
             android:layout_weight="1"
             android:hint="@string/name"
@@ -41,7 +41,7 @@
 
         <android.support.design.widget.TextInputEditText
             android:id="@+id/inputRightPlayerName"
-            android:layout_width="match_parent"
+            android:layout_width="150dp"
             android:layout_height="wrap_content"
             android:layout_weight="1"
             android:hint="@string/name"

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

@@ -6,7 +6,7 @@
         android:icon="@drawable/ic_undo"
         android:title="@string/undo"
         app:showAsAction="ifRoom"
-        android:enabled="false" />
+        android:visible="false" />
 
     <item
         android:id="@+id/action_redo"