Ensure that users aren't really deleted.
Merge branch 'staging'
Redeploy
Pin rails_autolink since newer gems demand ruby 1.9.3
Security fix for rails.
Set the i18n validation config to silence the warning.

Thanks to http://stackoverflow.com/questions/20361428/rails-i18n-validation-deprecation-warning
for the great explanation
Don't count deleted users as active.
Ensure profile is cleared, name changed and locations removed when deleting users.
Ensure deleted users are removed from groups and unsubscribed from threads.
Remove unecessary context.
Ensure correct behaviours when cancelling your account.
Merge branch 'deleting-users' into staging
scope the column names to avoid ambiguous column errors.