Author: David Woloszyn
MDL-79769 login: Add password toggle icon to the login screen
http://git.moodle.org/gw?p=moodle.git;a=commit;h=cb6acfc46aac50153f935bc308fbc8c041d36160
http://github.com/moodle/moodle/commit/cb6acfc46aac50153f935bc308fbc8c041d36160
+ 4.4 en [smallscreensonly,core_admin]
+ 4.4 en [auth_loginpasswordtoggle,core_auth]
+ 4.4 en [auth_loginpasswordtoggle_desc,core_auth]
+ 4.4 en [togglesensitive,core_form]