- deleted some .bak files
- Update database schema
- Fix an error in pp_ikobo.php
- Added autoload function in global.php and class database
- Added function fetch_all and modified function fetch_array to return assoc array.
- Remove include_once of classes in some files as of autoload
- Added 2 new classes: invoice and payment (in progress)
- Add typecast for fee_amount in class_fees_main.php
- Modified admin login to not check for captcha (pin)
- remove form check for direct_payment from sell.php in procedure_frmchk_item.php
- Heavily modified class_fees.php:
  + Changes all queries for Insert invoices: with status id. Basically, sellers only have to pay the fees after their products have been paid by buyers.
  + Replace dp_enabled with checked. This means enabling gateways will make them show up in section direct payment. Remove things related to direct payment.
  + callback process for payment gateways: added process for selling single item by account payment method
  + All fees for sellers are handled at the end of call back process and they are automatically substracted from seller's accounts.


Signed-off-by: kiennguyen1101 <kiennguyen1101@gmail.com>