added a prime function + css updates

Author: cnivolle

.gitignore

@@ -1,3 +1,4 @@
 /node_modules/
 npm-debug.log
 .clever.json
+.env

app.js

@@ -5,6 +5,9 @@ var logger        = require('morgan');
 var cookieParser  = require('cookie-parser');
 var bodyParser    = require('body-parser');
 
+
+const apm = require('elastic-apm-node').start({
+})
 var pg       = require('./db');
 
 var routes = require('./routes/routes');