Improved category and course list display on front page- see bug Bug #5965 - Frontpage Category List also showing courses; new Combo List(categories + courses), fixed categories list and separate settings for not logged in / logged in users; merged from MOODLE_16_STABLE

cleanup in admin/index.php; preparation for health center, loginas gui, password salts; merged from MOODLE_16_STABLE

Merged from MOODLE_16_STABLE

to show the workaround. Bug 5276.
(http://moodle.org/bugs/bug.php?op=show&bugid=5276)

I'm getting old. Should we send lang files to MOODLE_16_STABLE too?

1.6 Unicode Moodle, with a link to the docs.

Added allchanges lang string.

It can now take a module argument, and can support different link locations

are different in a lot of languages. Bug 5172.
(http://moodle.org/bugs/bug.php?op=show&bugid=5172)

I modified the enrollment plugin mechanism to work for any type of plugin

"Reset" item on the course admin menu.

This allows you to delete user data from the course without touching the
course itself.

Accessibility: Evaluation weekly format for course display - NO layout tables, for accessibility, etc. Initial straight copy of weeks/format.php; $string['formatweekscss']

loginas language typos a fixes (thanks rob for fixing it!) and more consistent loginas password dialog layout.

and changed help string to suit.