Hotfix/starting application (#157)

* Update core.js

Author: michelu89

core/electron-libs/core.js

@@ -18,6 +18,7 @@ const promises = require('./promisify');
 const portfinder = require('portfinder');
 const platformData = require('./os-checker');
 const {windowsManager} = require('./windows-manager');
+const projectVersion = require('../package.json').version;
 const {inDevMode} = require('./consts');
 
 /**
@@ -86,7 +87,6 @@ function startService() {
       }
     })
     .catch(error => {
-      alert();
       console.log(error);
       alert('Port between 30000 and 31000 are already in use.');
     });