Implemented bulk email interface for new dashboard
disable buttons for large courses on legacy and beta instr dash

set max enrollment for downloads to 200
Implemented bulk email interface for new dashboard
Responses to Adam's comments; reset common.py, i18n compliance, deleted extraneous email.html file, fixed an HttpResponse, deleted unnecessary commented-out code, some small style tweaks
tests fixed now?
added self to authors style, changed GET to POST
Minor visual improvements
Added acceptance tests for bulk email (through beta dashboard)
Merged in email confirmation modal
100% coverage aww yiss
Green notification message now works
Removed pudb imports; removed extraneous code
hack to make tests work?
added self to authors style, changed GET to POST
some minor visual changes
Minor visual improvements
Added acceptance tests for bulk email (through beta dashboard)
100% coverage aww yiss
Green notification message now works
fixed indent + changelog