Added junk filter remark

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

@@ -95,6 +95,19 @@
             app:layout_constraintStart_toStartOf="parent"
             app:layout_constraintTop_toBottomOf="@id/btnEditRules" />
 
+        <eu.faircode.email.FixedTextView
+            android:id="@+id/tvJunkFilterHint"
+            android:layout_width="0dp"
+            android:layout_height="wrap_content"
+            android:layout_marginTop="6dp"
+            android:text="@string/title_junk_filter_hint"
+            android:textAppearance="@style/TextAppearance.AppCompat.Small"
+            android:textColor="?attr/colorWarning"
+            android:textStyle="italic"
+            app:layout_constraintEnd_toStartOf="@+id/ibInfoFilter"
+            app:layout_constraintStart_toStartOf="parent"
+            app:layout_constraintTop_toBottomOf="@id/cbJunkFilter" />
+
         <ImageButton
             android:id="@+id/ibInfoFilter"
             android:layout_width="wrap_content"

app/src/main/res/values/strings.xml

@@ -100,6 +100,7 @@
     </string>
 
     <string name="title_junk_filter">Use local spam filter</string>
+    <string name="title_junk_filter_hint">This may increase battery usage</string>
 
     <string name="title_notification_sending">Sending messages</string>
     <string name="title_notification_waiting">Waiting for suitable connection</string>