removed xmlrpc and xmlrpcuser - added remote and remoteuser config option

conf/dokuwiki.php

lib/plugins/config/lang/ar/lang.php

lib/plugins/config/lang/bg/lang.php

lib/plugins/config/lang/ca-valencia/lang.php

lib/plugins/config/lang/ca/lang.php

lib/plugins/config/lang/cs/lang.php

lib/plugins/config/lang/da/lang.php

lib/plugins/config/lang/de-informal/lang.php

lib/plugins/config/lang/de/lang.php

lib/plugins/config/lang/el/lang.php

lib/plugins/config/lang/en/lang.php

lib/plugins/config/lang/eo/lang.php

lib/plugins/config/lang/es/lang.php

lib/plugins/config/lang/eu/lang.php

lib/plugins/config/lang/fa/lang.php

lib/plugins/config/lang/fi/lang.php

lib/plugins/config/lang/fr/lang.php

lib/plugins/config/lang/gl/lang.php

lib/plugins/config/lang/he/lang.php

lib/plugins/config/lang/hu/lang.php