Move hidden inputs for correct_ids and incorrect_ids to lie within the main problem form

Not sure if this is necessary -- but it does mean that these variables will now show up in listVariables()
It does not show in listVariables on the first submission. I am not sure why -- probably because they are calculated and
printed after the $inputs_ref hash is defined.  It shows on the second "submit button" push, I believe because
hidden fields are automaticaly copied over.

The fields correct_ids and incorrect_ids
are used by color.js which colors answer blanks  green or red depending on correctness.

Potentially this field can be used to determine whether or not a section in a compound problem can
be "opened".
Modify and clarify code.  This SHOULD be equivalent
Comment out legacy code
Fixed some of the xss vulnerabilities.
Getting Achievements ready for general use:
- Made new achievements to replace ones that were confusing or hard to use
- Made not using achievements the default state
- Testing a new system where in math 4 the body is hidden until the page is done rendering
Merge branch 'develop' of http://github.com/openwebwork/webwork2 into itemweaks

Conflicts:
	lib/WeBWorK/ContentGenerator/Problem.pm
Spelling ....
Tweaking how the hide until load thing works
reverting changes
Merge branch 'develop' of http://github.com/openwebwork/webwork2 into morexss
Added html escaping to warnings (note if you want to output html from pg you should use $PG->warning_message()
Added scrubbing to messages (only removes scripts right now)
Couldnt resist cleaning up the css for messages a bit.
An experimental change which hides the body until after everything is loaded.  (only affects math4)
Merge branch 'develop' of http://github.com/openwebwork/webwork2 into itemweaks
Added option to Course Configuration to enable achievement items
Merge branch 'develop' of http://github.com/openwebwork/webwork2 into morexss
Initial fix for additional xss vulnerabilities
Fixed unintended change
Merge branch 'develop' of https://github.com/openwebwork/webwork2 into develop
Removed formatting of basic html elements from bootstrap (again...)
Fixed colors