Customise the login page title

I am using dolibarr 12.0.3 hosted in Amazon Cloud. I just want to change my login page title, Login @ 12.0.3. Further more when I copy the application URL to my yahoo mail content area, it shows “Login@12.0.3-dolibarr development team”
I want to replace “dolibarr” name in the entire application with my company name.

Please help,

Thank you for the information.