Add dev docs generation to Jenkins:

Fixes: RIPD-1521

Switch to pure doxygen HTML for developer docs. Remove docca/boostbook
system. Convert consensus document to markdown. Add existing markdown
files to doxygen input set. Fix some image paths and scale images for
use with MD links. Rename/cleanup some files for consistency.
Add pipeline logic for windows slaves. Add ninja and parallel test run
option. Add make doc target build in build-and-test.sh. Cleanup README
files. Add nounity windows build. Add link to jenkins summary table.
Add rippled_classic build (win). Improve formatting of summary table.

cfg/rippled-example.service

@@ -0,0 +1,10 @@
+[Unit]
+Description=Ripple Peer-to-Peer Network Daemon
+ 
+[Service]
+Type=simple
+User=nobody
+ExecStart=/usr/bin/rippled --conf=/etc/rippled/rippled.cfg
+ 
+[Install]
+WantedBy=multi-user.target

cfg/rippled.init

@@ -0,0 +1,114 @@
+#!/bin/sh
+
+### BEGIN INIT INFO
+# Provides:          ripple
+# Required-Start:    $local_fs $remote_fs $network $syslog
+# Required-Stop:     $local_fs $remote_fs $network $syslog
+# Default-Start:     2 3 4 5
+# Default-Stop:      0 1 6
+# Short-Description: starts the ripple network node
+# Description:       starts rippled using start-stop-daemon
+### END INIT INFO
+
+set -e
+
+NAME=rippled
+USER="rippled"
+GROUP="rippled"
+PIDFILE=/var/run/$NAME.pid
+DAEMON=/usr/local/sbin/rippled
+DAEMON_OPTS="--conf /etc/ripple/rippled.cfg"
+NET_OPTS="--net $DAEMON_OPTS"
+LOGDIR="/var/log/rippled"
+DBDIR="/var/db/rippled/db/hyperldb"
+
+export PATH="${PATH:+$PATH:}/usr/sbin:/sbin"
+
+# I wish it didn't come down to this, but this is the easiest way to ensure
+# sanity of an install.
+if [ ! -d $LOGDIR ]; then
+	mkdir -p $LOGDIR
+	chown $USER:$GROUP $LOGDIR
+fi
+if [ ! -d $DBDIR ]; then
+	mkdir -p $DBDIR
+	chown -R $USER:$GROUP $DBDIR
+fi
+
+case "$1" in
+    start)
+        echo -n "Starting daemon: "$NAME
+        start-stop-daemon --start --quiet --background -m --pidfile $PIDFILE \
+            --exec $DAEMON --chuid $USER --group $GROUP --verbose -- $NET_OPTS
+        echo "."
+        ;;
+
+    stop)
+        echo -n "Stopping daemon: "$NAME
+        $DAEMON $DAEMON_OPTS stop
+        rm -f $PIDFILE
+        echo "."
+        ;;
+
+    restart)
+        echo -n "Restarting daemon: "$NAME
+        $DAEMON $DAEMON_OPTS stop
+        rm -f $PIDFILE
+        start-stop-daemon --start --quiet --background -m --pidfile $PIDFILE \
+            --exec $DAEMON --chuid $USER --group $GROUP -- $NET_OPTS
+        echo "."
+        ;;
+
+    status)
+        echo "Status of $NAME:"
+        echo -n "PID of $NAME: "
+        if [ -f "$PIDFILE" ]; then
+                cat $PIDFILE
+                $DAEMON $DAEMON_OPTS server_info
+        else
+                echo "$NAME not running."
+        fi
+        echo "."
+        ;;
+
+    fetch)
+        echo "$NAME ledger fetching info:"
+        $DAEMON $DAEMON_OPTS fetch_info
+        echo "."
+        ;;
+
+    uptime)
+        echo "$NAME uptime:"
+        $DAEMON $DAEMON_OPTS get_counts
+        echo "."
+        ;;
+
+    startconfig)
+        echo "$NAME is being started with the following command line:"
+        echo "$DAEMON $NET_OPTS"
+        echo "."
+        ;;
+
+    command)
+        # Truncate the script's argument vector by one position to get rid of
+        # this entry.
+        shift
+
+        # Pass the remainder of the argument vector to rippled.
+        $DAEMON $DAEMON_OPTS "$@"
+        echo "."
+        ;;
+
+    test)
+        $DAEMON $DAEMON_OPTS ping
+        echo "."
+        ;;
+
+    *)
+        echo "Usage: $0 {start|stop|restart|status|fetch|uptime|startconfig|"
+        echo "           command|test}"
+        exit 1
+esac
+
+exit 0
+

cfg/validators-example.txt

@@ -0,0 +1,55 @@
+#
+# Default validators.txt
+#
+# A list of domains to bootstrap a nodes UNLs or for clients to indirectly
+# locate IPs to contact the Ripple network.
+#
+# This file is UTF-8 with Dos, UNIX, or Mac style end of lines.
+# Blank lines and lines starting with a '#' are ignored.
+# All other lines should be hankos or domain names.
+#
+#
+#
+# [validators]
+#
+#   List of the validation public keys of nodes to always accept as validators.
+#
+#   The latest list of recommended validators can be obtained from
+#   https://ripple.com/ripple.txt
+#
+#   See also https://wiki.ripple.com/Ripple.txt
+#
+#   Examples:
+#    n9KorY8QtTdRx7TVDpwnG9NvyxsDwHUKUEeDLY3AkiGncVaSXZi5
+#    n9MqiExBcoG19UXwoLjBJnhsxEhAZMuWwJDRdkyDz1EkEkwzQTNt
+#
+# [validator_list_sites]
+#
+#   List of URIs serving lists of recommended validators.
+#
+#   Examples:
+#    https://ripple.com/validators
+#    http://127.0.0.1:8000
+#
+# [validator_list_keys]
+#
+#   List of keys belonging to trusted validator list publishers.
+#   Validator lists fetched from configured sites will only be considered
+#   if the list is accompanied by a valid signature from a trusted
+#   publisher key.
+#   Validator list keys should be hex-encoded.
+#
+#   Examples:
+#    ed499d732bded01504a7407c224412ef550cc1ade638a4de4eb88af7c36cb8b282
+#    0202d3f36a801349f3be534e3f64cfa77dede6e1b6310a0b48f40f20f955cec945
+#    02dd8b7075f64d77d9d2bdb88da364f29fcd975f9ea6f21894abcc7564efda8054
+#
+
+# The default validator list publishers that the rippled instance
+# trusts
+
+[validator_list_sites]
+https://vl.ripple.com
+
+[validator_list_keys]
+ED2677ABFFD1B33AC6FBC3062B71F1E8397C1505E1C42C64D11AD1B28FF73F4734