Small layout improvements

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

@@ -20,6 +20,7 @@
         android:id="@+id/ibCalendar"
         android:layout_width="36dp"
         android:layout_height="36dp"
+        android:layout_marginTop="6dp"
         android:background="?android:attr/selectableItemBackgroundBorderless"
         android:contentDescription="@string/title_icalendar_calendar"
         android:padding="6dp"
@@ -34,13 +35,14 @@
         android:id="@+id/ibOnline"
         android:layout_width="wrap_content"
         android:layout_height="wrap_content"
+        android:layout_marginTop="12dp"
         android:background="?android:attr/selectableItemBackgroundBorderless"
         android:contentDescription="@string/title_icalendar_calendar"
         android:padding="6dp"
         android:scaleType="fitCenter"
         android:tooltipText="@string/title_icalendar_accept"
-        app:layout_constraintBottom_toBottomOf="@+id/tvAttendees"
         app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintTop_toBottomOf="@+id/ibCalendar"
         app:srcCompat="@drawable/twotone_video_camera_front_24"
         app:tint="?attr/colorAccent" />
 
@@ -49,7 +51,7 @@
         android:layout_width="0dp"
         android:layout_height="wrap_content"
         android:layout_marginStart="6dp"
-        android:layout_marginTop="3dp"
+        android:layout_marginTop="12dp"
         android:layout_marginEnd="6dp"
         android:text="Summary"
         android:textAppearance="@style/TextAppearance.AppCompat.Medium"