Bug fix timezone issue putting dates on the wrong day of the week
Bug fix improvement to $answeights calculation
Improve outcome display
Add student ability to hide courses from course page.
Merge branch 'master' of github.com:drlippman/IMathAS

Conflicts:
	imascore.css
	javascript/general.js
Bug fix answeights calculation in gradeallq.php
Bug fix start= in video embed watchvid
Merge branch 'master' of github.com:drlippman/IMathAS
Bug fix twopoint abs grading
Bug fix decimal log_ bases
Merge branch 'master' of https://github.com/drlippman/IMathAS