* Tweak wording, options
* Instead of storing changes in local storage, warn when users may lose changes by navigating away
* Fix CreateTeacherAccountView so that if you connect to an existing account, the redirect is triggered
* Fix users.coffee weird race condition
Partially fix ActivateLicensesModal.spec
[IN PROGRESS] Don't display deleted users
Move userID to classroom.deletedMembers on user delete (not retroactive)
Fix PDF links for course guides, remove old PDFs from repo
Remove deprecated SalesView
Remove underline for not-yet-linked student names
Only show class select when there's more than one
Ignore case when sorting student names
Use student.broadName instead of name for display and sorting
Fix initial load not showing progress after joining a course (hacky)
Fix text entry for enrollment number input
Fix enrollment statistics
Fix enrollment stats completely (and add back in per-class unenrolled count)
Add deletedMembers to classroom schema
More fixes to enrollment stats (don't count nonmember prepaids)
Don't use 0 as implicit false for openSpots
Update suggested number of credit to buy automatically
Fix classroom edit form ignoring cleared values
Add alert text when more users selected than enrollments available
Alert user when trying to assign course to unenrolled students
Alert user when assigning course to nobody
Add some tests for TeacherClassView bulk assign alerts
Fix TeacherClassView tests failing without demos
Use model/collection.fakeRequests :D
Remove unused comment
Fix handling of improperly sorted deleted users on clientside
Add test for moving deleted users to deletedMembers
Add script for moving all deleted classroom members to classroom.deletedMembers
Completely rewrite tallying up enrollment statistics
Fix some tests to not be dependent on logged-in user
Address PR comments
Fix default number of enrollments to buy
Fix i18n for not enough enrollments
Use custom error message for classroom name length
* Move api loading to FacebookHandler
* Use success callbacks
* Use same, properly named events
* Use same functions and property names
* Refactor related social button, out of use rendering system
* Remove the now unnecessary form split from CreateAccountModal
Display leaderboard ads on campaign and play views.
Do no show ads in classroom, picoCTF, or to teachers.
Add no ads blurb to subscription features matrix.
Scale game UI for ads on short screens.
Closes#3491
