move modules from lib/modules to app/modules
only update grade after finish all questions in a training (fix for mcq.)
add select_all option to mcq.
change training/do view to support mcq with select all answers.
add new std submission type for the mcq question.
simplify the grader for mcq questions.
add a toz grader for mcq_select_all."
Merge branch 'development' of github.com:Coursemology/coursemology.org into development

* 'development' of github.com:Coursemology/coursemology.org:
  clean precompiled assets for dev branch
  first pass at CSS tweaks
Merge branch 'mcq_all_answers' into development

* mcq_all_answers:
  add a toz grader for mcq_select_all."
  simplify the grader for mcq questions.
  add new std submission type for the mcq question.
  change training/do view to support mcq with select all answers.
  add select_all option to mcq.