Beta release of member card support in IS4C

IS4C now supports member cards.

- It syncs with Fannie's memberCard table
- Member cards scan at the register
- If a member only belongs to one account, their member name and account
  are immediately brought up
- If a member belongs to more than one account, the cashier still needs
  to enter the account name, but the account search is restricted to
  only accounts that the member is a member of
- The "get member info" ruby script now successfully pulls the member
  card ID for the member
Removed debugging code from MemberCard.php
Removed very unnecessary line from reloadlanes.php
Scale now beeps when membership card is scanned.
Merge branch 'member_cards'