User can auction for getting tickets

[katopz]

• [ ] User purchased tickets
• [ ] All tickets has been purchased
• [ ] System automatic increase all auction-abled (AUCTION_SALE type) tickets price by +10% each sorted by bought date

  auction-ticket-2018-09-01 = 110
  auction-ticket-2018-09-02 = 120
  auction-ticket-2018-09-03 = 130

• [ ] System make an offers to blockchain
• [ ] Someone bid for tickets auction-ticket-2018-09-01
• [ ] User get noticed that their ticket has been gone and get ask for bid back

  Bot : Someone just buy your tickets!
  [ buy back 130 ]   [ give up ]
  User : give up
  Bot : Aww, No worry! You will get refund as CAT token for later use.

• [ ] System transfer 90% CAT back to user

  Bot : Refunded tickets, here's your current balance
  ------------
  90 CAT
  100 XLM
  ------------

• [ ] System cancel all offers 24hrs before event occur
• [ ] User get notice 24hrs before event that no one can bid anymore