Added setup variable for a new QA server path

<resources>

    <string name="build_number"></string>

    <string name="server_base_url"></string>

    <string name="server_base_url_2"></string>

    <string name="username"></string>

    <string name="password"></string>

    <string name ="user_agent">Mozilla/5.0 (Android) ownCloud test project</string>