config tests added,

titles tests added,
.env file support added with dotenv,
README.md file updated for .evn file support,
database lost connection bug crash fixed,
session server run_session long timeout bug fixed,
links module added,
webrtc_proc json arguments added,
app_proc stdout and stderr support added,
infinity app_proc spawn freeze bug fixed

config.js

@@ -1,6 +1,8 @@
+require('dotenv').config()
+
 module.exports = {
     port: parseInt(process.env.PORT),
-    external_url: process.env.EXTERNAL_URL,
+    external_domain: process.env.EXTERNAL_DOMAIN,
     coordinator_url: process.env.COORDINATOR_URL,
     database_url: process.env.DATABASE_URL,
     database_name: process.env.DATABASE_NAME,