Don't allow app name translation

<?xml version="1.0" encoding="utf-8"?><resources xmlns:tools="http://schemas.android.com/tools">

    <!-- common strings -->

    <string name="app_name">DAVx⁵</string>

    <string name="app_name" translatable="false">DAVx⁵</string>

    <string name="homepage_url" translatable="false">https://www.davx5.com/</string>

    <string name="account_invalid">Account does not exist (anymore)</string>