Disable deeplinking when the app is running in development mode

In that case, electron.exe is registered as the protocol client.
The app would not work because app dir is not set when launching.

src/main.js

@@ -334,7 +334,9 @@ ipcMain.on('download-url', (event, URL) => {
   });
 });
 
-if (protocols && protocols[0] &&
+if (isDev) {
+  console.log('In development mode, deeplinking is disabled');
+} else if (protocols && protocols[0] &&
   protocols[0].schemes && protocols[0].schemes[0]
 ) {
   scheme = protocols[0].schemes[0];