Added Libravatar privacy warning

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

@@ -864,6 +864,18 @@
                     app:layout_constraintTop_toBottomOf="@id/tvGravatarsHint"
                     app:switchPadding="12dp" />
 
+                <eu.faircode.email.FixedTextView
+                    android:id="@+id/tvLibravatarsHint"
+                    android:layout_width="wrap_content"
+                    android:layout_height="wrap_content"
+                    android:layout_marginTop="6dp"
+                    android:drawableTint="?attr/colorWarning"
+                    android:text="@string/title_advanced_gravatars_hint"
+                    android:textAppearance="@style/TextAppearance.AppCompat.Small"
+                    android:textColor="?attr/colorWarning"
+                    app:layout_constraintStart_toStartOf="parent"
+                    app:layout_constraintTop_toBottomOf="@id/swLibravatars" />
+
                 <eu.faircode.email.FixedImageButton
                     android:id="@+id/ibLibravatars"
                     android:layout_width="wrap_content"
@@ -872,7 +884,7 @@
                     android:contentDescription="@string/title_info"
                     android:tooltipText="@string/title_info"
                     app:layout_constraintStart_toStartOf="parent"
-                    app:layout_constraintTop_toBottomOf="@+id/swLibravatars"
+                    app:layout_constraintTop_toBottomOf="@+id/tvLibravatarsHint"
                     app:srcCompat="@drawable/twotone_info_24" />
 
                 <androidx.appcompat.widget.SwitchCompat
@@ -1449,7 +1461,7 @@
                     android:id="@+id/grpGravatars"
                     android:layout_width="0dp"
                     android:layout_height="0dp"
-                    app:constraint_referenced_ids="swGravatars,tvGravatarsHint,swLibravatars,ibLibravatars" />
+                    app:constraint_referenced_ids="swGravatars,tvGravatarsHint,swLibravatars,tvLibravatarsHint,ibLibravatars" />
             </androidx.constraintlayout.widget.ConstraintLayout>
         </androidx.cardview.widget.CardView>