added copy of ffsync from arch as base info for ubuntu

firefox/sync/mozilla-firefox-sync-server-git.install

@@ -0,0 +1,20 @@
+post_install() {
+        getent group ffsync &>/dev/null || groupadd ffsync >/dev/null
+        getent passwd ffsync &>/dev/null || useradd -r -s /usr/bin/false -g ffsync -G ffsync,http -d /var/lib/ffsync ffsync >/dev/null
+
+        chown -R ffsync:ffsync /var/lib/ffsync
+        systemd-tmpfiles --create ffsync.conf
+}
+
+post_update() {
+        chown -R ffsync:ffsync /var/lib/ffsync
+        chown -R ffsync:http /run/ffsync
+
+        echo ">> Documentation: https://wiki.archlinux.org/index.php/Mozilla_Firefox_Sync_Server"
+}
+
+pre_remove() {
+        getent passwd ffsync &>/dev/null && userdel ffsync >/dev/null
+        getent group ffsync &>/dev/null && groupdel ffsync >/dev/null
+        true
+}