cache more pages in Pager

app/src/main/java/info/nightscout/androidaps/MainActivity.kt

@@ -190,6 +190,7 @@ class MainActivity : NoSplashAppCompatActivity() {
             }
         }
         main_pager.adapter = pageAdapter
+        main_pager.offscreenPageLimit = 8 // This may cause more memory consumption
         checkPluginPreferences(main_pager)
 
         // Tabs

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

@@ -43,7 +43,8 @@
         android:id="@+id/overview_pumpstatuslayout"
         android:layout_width="match_parent"
         android:layout_height="wrap_content"
-        android:orientation="horizontal" >
+        android:orientation="horizontal"
+        android:visibility="gone">
 
         <TextView
             android:id="@+id/overview_pumpstatus"