Indicate that more items are available in Sleep sessions list in Sleep charts

app/src/main/java/nodomain/freeyourgadget/gadgetbridge/activities/charts/SleepChartFragment.java

@@ -296,11 +296,13 @@ public class SleepChartFragment extends AbstractChartFragment {
             result.append(getContext().getString(R.string.you_did_not_sleep));
         } else {
             for (SleepSession sleepSession : pieData.getSleepSessions()) {
+                if (result.length() > 0) {
+                    result.append('\n');
+                }
                 result.append(getContext().getString(
                         R.string.you_slept,
                         DateTimeUtils.timeToString(sleepSession.getSleepStart()),
                         DateTimeUtils.timeToString(sleepSession.getSleepEnd())));
-                result.append('\n');
             }
         }
         return result.toString();
@@ -530,4 +532,4 @@ public class SleepChartFragment extends AbstractChartFragment {
         public float getIntensityTotal() { return intensityTotal;}
 
     }
-}
+}

app/src/main/res/layout-land/fragment_sleepchart.xml

@@ -15,6 +15,9 @@
             android:id="@+id/sleepchart_info"
             android:layout_width="fill_parent"
             android:layout_height="fill_parent"
+            android:maxLines="3"
+            android:scrollbarAlwaysDrawVerticalTrack="true"
+            android:scrollbarFadeDuration="0"
             android:layout_weight="90" />
 
         <LinearLayout

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

@@ -16,6 +16,8 @@
             android:layout_height="wrap_content"
             android:layout_weight="0"
             android:maxLines="3"
+            android:scrollbarAlwaysDrawVerticalTrack="true"
+            android:scrollbarFadeDuration="0"
             android:scrollbars="vertical" />
 
         <com.github.mikephil.charting.charts.PieChart