Move personal settings to proper registration

apps/settings/appinfo/info.xml

apps/settings/composer/composer/autoload_classmap.php

apps/settings/composer/composer/autoload_static.php

apps/settings/lib/Settings/Personal/Additional.php

apps/settings/lib/Settings/Personal/PersonalInfo.php

apps/settings/lib/Settings/Personal/Security/Authtokens.php

apps/settings/lib/Settings/Personal/Security/Password.php

apps/settings/lib/Settings/Personal/ServerDevNotice.php

...settings/tests/Controller/AdminSettingsControllerTest.php

...tings/tests/Settings/Personal/Security/AuthtokensTest.php

...ettings/tests/Settings/Personal/Security/PasswordTest.php

lib/private/Settings/Manager.php

tests/lib/Settings/ManagerTest.php