Default disable last sync time / nav menu for small screens

app/src/main/java/eu/faircode/email/ActivityMain.java

@@ -402,8 +402,11 @@ public class ActivityMain extends ActivityBase implements FragmentManager.OnBack
             }
 
             // Default disable landscape columns for small screens
-            if (!config.isLayoutSizeAtLeast(Configuration.SCREENLAYOUT_SIZE_NORMAL))
+            // Disable last sync time / nav menu for small screens
+            if (!config.isLayoutSizeAtLeast(Configuration.SCREENLAYOUT_SIZE_NORMAL)) {
                 editor.putBoolean("landscape", false);
+                editor.putBoolean("nav_last_sync", false);
+            }
             editor.putBoolean("landscape3", false);
 
             // Default send bubbles off when accessibility enabled