Notification of string changes

Author: Petr Skoda
MDL-30548 support user suspended flag in admin UI
This patch includes:
* user management suspend UI tweaks and other coding style improvements
* suspended info in user profiles
* suspend option in advanced edit form
* suspended user filtering
* hidden user fields option for suspended field

Thanks Sam Hemelryk for valuable feedback.


http://git.moodle.org/gw?p=moodle.git;a=commit;h=4ad72c284d1d864060c4399150cf973e5f2abc4f
http://github.com/moodle/moodle/commit/4ad72c284d1d864060c4399150cf973e5f2abc4f

+ 2.3 en [suspenduser,core_admin]
+ 2.3 en [unsuspenduser,core_admin]
+ 2.3 en [suspended,core_auth]
+ 2.3 en [suspended_help,core_auth]