diff --git a/.codeclimate.yml b/.codeclimate.yml
new file mode 100644
index 00000000..e1cb3b50
--- /dev/null
+++ b/.codeclimate.yml
@@ -0,0 +1,3 @@
+engines:
+  shellcheck:
+    enabled: true
diff --git a/advanced/01-pihole.conf b/advanced/01-pihole.conf
index fd8e27f2..f4707ef4 100644
--- a/advanced/01-pihole.conf
+++ b/advanced/01-pihole.conf
@@ -20,6 +20,12 @@
 #                        OR IN /etc/dnsmasq.conf                              #
 ###############################################################################
 
+address=/pi.hole/@IPv4@
+address=/pi.hole/@IPv6@
+
+address=/@HOSTNAME@/@IPv4@
+address=/@HOSTNAME@/@IPv6@
+
 addn-hosts=/etc/pihole/gravity.list
 
 domain-needed
@@ -33,8 +39,6 @@ server=@DNS2@
 
 interface=@INT@
 
-listen-address=127.0.0.1
-
 cache-size=10000
 
 log-queries
diff --git a/advanced/lighttpd.conf.debian b/advanced/lighttpd.conf.debian
index bf2e5104..15821bc7 100644
--- a/advanced/lighttpd.conf.debian
+++ b/advanced/lighttpd.conf.debian
@@ -12,6 +12,7 @@
 server.modules = (
 	"mod_access",
 	"mod_accesslog",
+	"mod_auth",
 	"mod_expire",
 	"mod_compress",
 	"mod_redirect",
@@ -60,3 +61,6 @@ $HTTP["url"] =~ "^(?!/admin)/.*" {
     # Create a response header for debugging using curl -I
     setenv.add-response-header = ( "X-Pi-hole" => "A black hole for Internet advertisements." )
 }
+
+# Add user chosen options held in external file
+include_shell "cat external.conf 2>/dev/null"
diff --git a/advanced/lighttpd.conf.fedora b/advanced/lighttpd.conf.fedora
index fc00923c..96e1311e 100644
--- a/advanced/lighttpd.conf.fedora
+++ b/advanced/lighttpd.conf.fedora
@@ -11,6 +11,7 @@
 
 server.modules = (
 	"mod_access",
+	"mod_auth",
 	"mod_fastcgi",
 	"mod_accesslog",
 	"mod_expire",
@@ -77,3 +78,6 @@ $HTTP["url"] =~ "^(?!/admin)/.*" {
 	# Create a response header for debugging using curl -I
 	setenv.add-response-header = ( "X-Pi-hole" => "A black hole for Internet advertisements." )
 }
+
+# Add user chosen options held in external file
+include_shell "cat external.conf 2>/dev/null"
diff --git a/automated install/basic-install.sh b/automated install/basic-install.sh
index a480b855..023a21ed 100755
--- a/automated install/basic-install.sh	
+++ b/automated install/basic-install.sh	
@@ -555,6 +555,37 @@ version_check_dnsmasq() {
 	else
 		sed -i '/^server=@DNS2@/d' ${dnsmasq_pihole_01_location}
 	fi
+
+	#sed -i "s/@HOSTNAME@/$hostname/" ${dnsmasq_pihole_01_location}
+
+	if [[ -f /etc/hostname ]]; then
+		hostname=$(</etc/hostname)
+	elif [ -x "$(command -v hostname)" ]; then
+		hostname=$(hostname -f)
+	fi
+
+	#Replace IPv4 and IPv6 tokens in 01-pihole.conf for pi.hole resolution.
+	if [[ "${IPv4_address}" != "" ]]; then
+	    tmp=${IPv4_address%/*}
+	    sed -i "s/@IPv4@/$tmp/" ${dnsmasq_pihole_01_location}
+	else
+		sed -i '/^address=\/pi.hole\/@IPv4@/d' ${dnsmasq_pihole_01_location}
+		sed -i '/^address=\/@HOSTNAME@\/@IPv4@/d' ${dnsmasq_pihole_01_location}
+	fi
+
+	if [[ "${IPv6_address}" != "" ]]; then
+	    sed -i "s/@IPv6@/$IPv6_address/" ${dnsmasq_pihole_01_location}
+	else
+		sed -i '/^address=\/pi.hole\/@IPv6@/d' ${dnsmasq_pihole_01_location}
+		sed -i '/^address=\/@HOSTNAME@\/@IPv6@/d' ${dnsmasq_pihole_01_location}
+	fi
+
+	if [[ "${hostname}" != "" ]]; then
+	    sed -i "s/@HOSTNAME@/$hostname/" ${dnsmasq_pihole_01_location}
+	else
+		sed -i '/^address=\/@HOSTNAME@*/d' ${dnsmasq_pihole_01_location}
+	fi
+
 	sed -i 's/^#conf-dir=\/etc\/dnsmasq.d$/conf-dir=\/etc\/dnsmasq.d/' ${dnsmasq_conf}
 }
 
@@ -580,6 +611,7 @@ installScripts() {
 
 	install -o "${USER}" -Dm755 -t /opt/pihole/ gravity.sh
 	install -o "${USER}" -Dm755 -t /opt/pihole/ ./advanced/Scripts/*.sh
+	install -o "${USER}" -Dm755 -t /opt/pihole/ ./automated\ install/uninstall.sh
 	install -o "${USER}" -Dm755 -t /usr/local/bin/ pihole
 
 	install -Dm644 ./advanced/bash-completion/pihole /etc/bash_completion.d/pihole
@@ -601,6 +633,8 @@ installConfigs() {
 	chown ${LIGHTTPD_USER}:${LIGHTTPD_GROUP} /var/run/lighttpd
 	mkdir -p /var/cache/lighttpd/compress
 	chown ${LIGHTTPD_USER}:${LIGHTTPD_GROUP} /var/cache/lighttpd/compress
+	mkdir -p /var/cache/lighttpd/uploads
+	chown ${LIGHTTPD_USER}:${LIGHTTPD_GROUP} /var/cache/lighttpd/uploads
 }
 
 stop_service() {
diff --git a/gravity.sh b/gravity.sh
index f524e587..112b42b6 100755
--- a/gravity.sh
+++ b/gravity.sh
@@ -29,8 +29,7 @@ EOM
 
 adListFile=/etc/pihole/adlists.list
 adListDefault=/etc/pihole/adlists.default
-whitelistScript=/opt/pihole/whitelist.sh
-blacklistScript=/opt/pihole/blacklist.sh
+whitelistScript="pihole -w"
 whitelistFile=/etc/pihole/whitelist.txt
 blacklistFile=/etc/pihole/blacklist.txt
 
@@ -186,7 +185,7 @@ gravity_Schwarzchild() {
 }
 
 gravity_Blacklist() {
-	# Append blacklist entries if they exist
+	# Append blacklist entries to eventHorizon if they exist
 	if [[ -f "${blacklistFile}" ]]; then
 	    numBlacklisted=$(wc -l < "${blacklistFile}")
 	    plural=; [[ "$numBlacklisted" != "1" ]] && plural=s
@@ -216,11 +215,13 @@ gravity_Whitelist() {
 	# Ensure adlist domains are in whitelist.txt
 	${whitelistScript} -nr -q "${urls[@]}" > /dev/null
 
+    # Check whitelist.txt exists.
 	if [[ -f "${whitelistFile}" ]]; then
         # Remove anything in whitelist.txt from the Event Horizon
         numWhitelisted=$(wc -l < "${whitelistFile}")
         plural=; [[ "$numWhitelisted" != "1" ]] && plural=s
         echo -n "::: Whitelisting $numWhitelisted domain${plural}..."
+        #print everything from preEventHorizon into eventHorizon EXCEPT domains in whitelist.txt
         grep -F -x -v -f ${whitelistFile} ${piholeDir}/${preEventHorizon} > ${piholeDir}/${eventHorizon}
         echo " done!"
 	else
@@ -240,31 +241,20 @@ gravity_unique() {
 gravity_hostFormat() {
 	# Format domain list as "192.168.x.x domain.com"
 	echo "::: Formatting domains into a HOSTS file..."
-	if [[ -f /etc/hostname ]]; then
-		hostname=$(</etc/hostname)
-	elif [ -x "$(command -v hostname)" ]; then
-		hostname=$(hostname -f)
-	else
-		echo "::: Error: Unable to determine fully qualified domain name of host"
-	fi
-
     # Check vars from setupVars.conf to see if we're using IPv4, IPv6, Or both.
     if [[ -n "${IPv4_address}" && -n "${IPv6_address}" ]];then
 
         # Both IPv4 and IPv6
-        echo -e "$IPv4_address $hostname\n$IPv6_address $hostname\n$IPv4_address pi.hole\n$IPv6_address pi.hole" > ${piholeDir}/${accretionDisc}
         cat ${piholeDir}/${eventHorizon} | awk -v ipv4addr="$IPv4_address" -v ipv6addr="$IPv6_address" '{sub(/\r$/,""); print ipv4addr" "$0"\n"ipv6addr" "$0}' >> ${piholeDir}/${accretionDisc}
 
     elif [[ -n "${IPv4_address}" && -z "${IPv6_address}" ]];then
 
         # Only IPv4
-        echo -e "$IPv4_address $hostname\n$IPv4_address pi.hole" > ${piholeDir}/${accretionDisc}
         cat ${piholeDir}/${eventHorizon} | awk -v ipv4addr="$IPv4_address" '{sub(/\r$/,""); print ipv4addr" "$0}' >> ${piholeDir}/${accretionDisc}
 
     elif [[ -z "${IPv4_address}" && -n "${IPv6_address}" ]];then
 
         # Only IPv6
-        echo -e "$IPv6_address $hostname\n$IPv6_address pi.hole" > ${piholeDir}/${accretionDisc}
         cat ${piholeDir}/${eventHorizon} | awk -v ipv6addr="$IPv6_address" '{sub(/\r$/,""); print ipv6addr" "$0}' >> ${piholeDir}/${accretionDisc}
 
     elif [[ -z "${IPv4_address}" && -z "${IPv6_address}" ]];then