config 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

app.js

@@ -8,6 +8,13 @@ const {request_logger, error_logger} = require('./src/middlewares/logger')
 const {options, cors} = require('./src/middlewares/cors')
 const {error_handler} = require('./src/middlewares/error_handler')
 //const limiter = require('./src/middlewares/limiter')
+const {test_config} = require('./tests/config')
+
+if (!test_config()) {
+    process.exit(1)
+}
+
+console.log('all initial tests successfully passed')
 
 app.options(options)
 
@@ -32,5 +39,4 @@ app.use(error_handler)
 
 // start listen server
 app.listen(port)
-console.log('all config.js tests passed successfully [not developed]')
 console.log(`Listening at http://localhost:${port}`)