Merge branch 'select/release' into select/rc

Conflicts:
	lms/djangoapps/instructor/views/legacy.py
Merge branch 'select/release' into select/rc

Conflicts:
	lms/djangoapps/instructor/views/legacy.py

fixes and speed opt

Alpha Integ stat impl

added all courses

fixes

fixes

full stat impl

fixes

new features

fixes

fixes

fixes, upgrade itegr stat

remaster

added sample progress bar

fixes utf8

fixes

fix

fix

fix div by zero

remove some strage error logging

fixes

fixes unicode rubric

fix

fix

fix / in course.id during file output

add try catch

fixes

added view

fixes

fixes

fixes

fixes

fixes

fixes

fixes style