Rename and update init files to use "gitea" instead of "gogs"

Closes #102

scripts/systemd/gitea.service

@@ -0,0 +1,26 @@
+[Unit]
+Description=Gogs (Go Git Service)
+After=syslog.target
+After=network.target
+#After=mysqld.service
+#After=postgresql.service
+#After=memcached.service
+#After=redis.service
+
+[Service]
+# Modify these two values and uncomment them if you have
+# repos with lots of files and get an HTTP error 500 because
+# of that
+###
+#LimitMEMLOCK=infinity
+#LimitNOFILE=65535
+Type=simple
+User=git
+Group=git
+WorkingDirectory=/home/git/gitea
+ExecStart=/home/git/gitea/gitea web
+Restart=always
+Environment=USER=git HOME=/home/git
+
+[Install]
+WantedBy=multi-user.target