closes #2332.  raises event when repopulating textbox
Merge pull request #2333 from Stanford-Online/jbau-graded-exam-repop-event

closes #2332.  raises event when repopulating textbox
initial commit for adding members
sending email
inviting single email addresses done
adding users via CSV -> celery task
include username in existing user invite email
added preenroll_only functionality
added python engineer job post with disabled link
fixed some english whoopsies
change python job description a bit (#2341)
class member promote/demote
NO-OP change to retry travis (tests pass locally)
Merge pull request #2342 from Stanford-Online/giulio-hiring-page

Added python engineer job post with disabled link
192 char email field -> 128 char
user settings.SERVER_EMAIL instead of hardcode
Merge pull request #2343 from Stanford-Online/jbau-member-management

Jbau member management
Merge branch 'master' of github.com:Stanford-Online/class2go into sef-dglance-site-templates-move