* Refactor several related endpoints and views
* Redesign EnrollmentView, add TeacherContactModal
* Add "Enrollment Status" tab to TeacherClassView
* Delete PurchaseCoursesView and related files
* Style-flatten RemoveStudentModal
* Fix error handling in ActivateLicensesModal
* TeacherCoursesView loads faster by only loading course campaigns, and not load prepaids
This adds the ability to verify email addresses of a user, so we know they have access to the email address on their account.
Until a user has verified their email address, any teacher of a class they're in can reset their password for them via the Teacher Dashboard. When a user's email address is verified, a teacher may trigger a password recovery email to be sent to the student.
Verification links are valid forever, until the user changes the email address they have on file. They are created using a timestamp, with a sha256 of timestamp+salt+userID+email. Currently the hash value is rather long, could be shorter.
Squashed commit messages:
Add server endpoints for verifying email address
Add server endpoints for verifying email address (pt 2)
Add Server+Client endpoint for sending verification email
Add client view for verification links
Add Edit Student Modal for resetting passwords
Add specs for EditStudentModal
Tweak method name in EditStudentModal
Add edit student button to TeacherClassView
Fix up frontend for teacher password resetting
Add middleware for teacher password resetting
Improve button UX in EditStudentModal
Add JoinClassModal
Add welcome emails, use broad name
Use email without domain as fallback instead of full email
Fetch user on edit student modal open
Don't allow password reset if student email is verified
Set role to student on user signup with classCode
Tweak interface for joinClassModal
Add button to request verification email for yourself
Fix verify email template ID
Move text to en.coffee
Minor tweaks
Fix code review comments
Fix some tests, disable a broken one
Fix misc tests
Fix more tests
Refactor recovery email sending to auth
Fix overbroad sass
Add options to refactored recovery email function
Rename getByCode to fetchByCode
Fix error message
Fix up error handling in users middleware
Use .get instead of .toObject
Use findById
Fix more code review comments
Disable still-broken test
* 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
* Make work there are multiple network requests and only one fails
* Test for i18n attributes instead of English translations so Travis works
* Various PR changes
