MDL-11762 - Navigation not set up properly for resources - $this->navlinks was not being initialised in the base class. Merged from MOODLE_19_STABLE.

mergerd from 1.9 :: removed the javascript to correct the header display :: IE7 hangs. Need to find a different solution.

where the correct responses on a JQuiz multiple choice question all have a score of 0%, the scores will be corrected to 100%

Merged from MOODLE_19_STABLE

Correct misleading error message in upgrade_activity_modules. Spotted while diagnosing MDL-11732. Merged from MOODLE_19_STABLE.

MDL-11729 :: Removed commenting out loading of the Chameleon files loading.
MDL-11664 :: IE6 can't display transparent PNGs. Added not transparent gifs instead and changed the background for IE6 to a solid colour.

This check-in removes about 400 lines of code. I hope I have not screwed anything up. I would be grateful if people could review this change, and keep an eye on the navigation bar in modules.

Any navigation bar bugs you find in the near future, feel free to file them in the tracker and assign them to me. Thanks.

If not to many problems are found, I think I would like to backport this to 1.9 stable, but I am not sure that is a good idea. Opinions to the General Developer Forum please. I am about to start a thread there.

MDL-11699 - Further, backwards-compatible, improvement to the build navigation API to simplify a common case. Also, further improvements to the doc comment, so it is easy to use. Merged from MOODLE_19_STABLE.

Merged from MOODLE_19_STABLE

MDL-11699 - Addendum - rewrite the other half of the function too, so I can understand what it is doing, and fix a couple of minor logic errors along the way. Merged from MOODLE_19_STABLE.

MDL-9542 - Show final grades from new gradebook in Quiz UI - with help from Petr. Merged from MOODLE_19_STABLE.