update training/mission stat (wording).
comment back check achievement after mission is graded
add not start for training stats
ordering of staff in select
ordering student list
Merge branch 'development' of github.com:Coursemology/coursemology.org into development

* 'development' of github.com:Coursemology/coursemology.org:
  review for coding questions
  precompiled assets
uncomment updating achievements.
fix performance lag caused by counting pending comments -- not stable
pending comments added course_id
Merge branch 'development' of github.com:Coursemology/coursemology.org into dev/raymoond

Conflicts:
	app/models/user_course.rb
	app/views/trainings/stats.html.erb