Put a notice to double-check the encryption password.

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

@@ -41,6 +41,10 @@
                 android:layout_height="wrap_content"
                 android:hint="@string/login_encryption_password"/>
 
+            <TextView
+                android:layout_width="match_parent"
+                android:layout_height="wrap_content"
+                android:text="@string/login_encryption_check_password"/>
         </LinearLayout>
     </ScrollView>
 

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

@@ -128,6 +128,7 @@
     <string name="login_email_address_error">Valid email address required</string>
     <string name="login_password">Password</string>
     <string name="login_encryption_password">Encryption Password</string>
+    <string name="login_encryption_check_password">* Please double-check the password, as it can\'t be changed if wrong.</string>
     <string name="login_password_required">Password required</string>
     <string name="login_type_url">Login with URL and user name</string>
     <string name="login_url_must_be_http_or_https">URL must begin with http(s)://</string>