Remove forgot password tool and replace with help page
Drop email address uniqueness constraint
Drop email address uniqueness constraint from ZfcUserAdmin
Drop email address uniqueness constraint from LdcUserProfile
Drop lookup by email address from RemoteDataSync job SyncPlayer
Disable self-registration
Disallow login by email address
CS fix
Fix some failing tests
Updated behat tests to reflect change in email address and account signup policies
Link sign-in assistance to Erik's email address for now
[skip ci]
Merge branch 'hotfix/144' into develop

Closes #144