FEAT #15350 TIME 0:10 clean useless code (install)

install/ajax.php

install/class/Class_Install.php

install/class/Class_Merge.php

install/controller/config_controller.php

install/controller/database_controller.php

install/controller/docservers_controller.php

install/controller/error_controller.php

install/controller/language_controller.php

install/controller/licence_controller.php

install/controller/password_controller.php

install/controller/prerequisites_controller.php

install/controller/resume_controller.php

install/controller/smtp_controller.php

install/controller/welcome_controller.php

install/css/atProperty.css

install/css/buttons.css

install/css/fonts/Arizona.woff

install/css/fonts/contrailOne.woff

install/css/fonts/sonsieOne.woff

install/css/footer.css