usernaty-> now seller + items
buyorder:
- added commission when buyer pays
- getSellerCommission(orders already payed)-> now getting all, not just
from that month
new service-> sellerCommission
showing real seller commission to pay
moving commission code to dashboard.js
showing dashboard data from real seller
deleting sellerId from routes , controllers and .jss
showing modal when seller chooses pay
creating payCheckoutUrl
getting buyorders with commission not payed yet, no matters month
marking all buyorders as payed after success
organize imports+
return commissions details
Merge pull request #49 from mbmihura/RefactorBuyerViews

Refactor buyer views
showing commissions detail in modal (timestamp showing wrongly)
last row with different color
- generate commissionCheckoutUrl only if commission > 0
- disable PayButton if commission <0
added pay_date to buyorder -> showing with format in commission detail
Commission payment error/success pages
- register item purchase for seller after buyorder is payed
- avoidinng assign credits or register BUY more than once
Merge branch 'DEV' into SellersCommission