Add express-validator library

api/server.js

@@ -24,6 +24,9 @@ server.use(
 	}),
 );
 
+// TODO: Add validation to all requests
+server.use(expressValidator());
+
 server.use('/api/accounts', accountsRoute);
 server.use('/api/meetings', meetingsRoute);
 server.use('/api/participants', participantsRoute);