Part work for the Ticket System.
Merge branch 'master' into ticket_system
add translations for two factor auth timeout
Merge branch 'master' of https://github.com/peatio/peatio
fix spec
enable/disable user account on admin panel
prevent disabled user login
More I18n work for ticket system.
fix trades api bug
prevent disabled user using API
Refactor i18n translations for currency
Admin can reply and manage the tickets in Admin panel.
Change a translation.
Merge branch 'master' into ticket_system
User can Admin both can close the tickets.
Got rid of deprecated message of scope.
refactor trade queries, add Trade.filter, filter by trade id range
redirect to tickets new page if there is no tickets yet.
Tiny i18n work.
Add the read/unread function for tickets and comments.