proper icon display for night theme for activities and notifications

Signed-off-by: Andy Scherzinger <info@andy-scherzinger.de>

src/main/res/layout/activity_list_item.xml

@@ -30,13 +30,15 @@
 
     <ImageView
         android:id="@+id/activity_icon"
-        android:layout_width="@dimen/activity_icon_width"
-        android:layout_height="@dimen/activity_icon_height"
+        android:layout_width="@dimen/notification_icon_width"
+        android:layout_height="@dimen/notification_icon_height"
         android:layout_alignParentTop="true"
         android:layout_marginTop="@dimen/standard_margin"
         android:alpha="0.5"
-        android:src="@drawable/ic_activity"
-        android:contentDescription="@string/activity_icon"/>
+        android:padding="2dp"
+        android:background="@drawable/round_bgnd"
+        android:contentDescription="@string/activity_icon"
+        android:src="@drawable/ic_activity" />
 
     <LinearLayout
         android:layout_width="match_parent"

src/main/res/layout/notification_list_item.xml

@@ -35,11 +35,13 @@
         android:layout_width="@dimen/notification_icon_width"
         android:layout_height="@dimen/notification_icon_height"
         android:layout_alignParentTop="true"
-        android:layout_marginRight="@dimen/notification_icon_layout_right_end_margin"
         android:layout_marginEnd="@dimen/notification_icon_layout_right_end_margin"
+        android:layout_marginRight="@dimen/notification_icon_layout_right_end_margin"
+        android:padding="2dp"
         android:alpha="0.5"
-        android:src="@drawable/ic_notification"
-        android:contentDescription="@string/notification_icon"/>
+        android:background="@drawable/round_bgnd"
+        android:contentDescription="@string/notification_icon"
+        android:src="@drawable/ic_notification" />
 
     <LinearLayout
         android:layout_width="match_parent"