Updated systemd services.

(cherry picked from commit 297c6012)

systemd service/aura-engine.service

 [Unit]
-Description=Aura Engine Playout Server
+Description=Aura Engine - Playout Server
 After=network.target
 
 [Service]
 Type=simple
-User=gg
-WorkingDirectory=/home/gg/PycharmProjects/engine
-ExecStart=/home/gg/PycharmProjects/engine/aura.py
-ExecStop=/home/gg/PycharmProjects/engine/guru.py --shutdown --quiet
+User=david
+WorkingDirectory=/home/david/Code/aura/engine
+ExecStart=/home/david/Code/aura/engine/aura.py
+ExecStop=/home/david/Code/aura/engine/guru.py --shutdown --quiet
 Restart=always
 
 [Install]

systemd service/aura-lqs.service

 [Unit]
-Description=Aura Engine Playout Server
+Description=Aura Engine - Liquidsoap Server
 After=network.target aura-engine.service
 Wants=aura-engine.service
 
 [Service]
 Type=simple
-User=gg
-ExecStart=/usr/bin/liquidsoap /home/gg/PycharmProjects/engine/modules/liquidsoap/engine.liq
+User=david
+ExecStart=/usr/bin/liquidsoap /home/david/Code/aura/engine/modules/liquidsoap/engine.liq
 Restart=always
 
 [Install]