added a test file to see if it works
Added to SQL:
1) added Transaction table
2) added samples for Transaction

Added a way to query all transactions.
Finished transaction with:
1) Checking for existing item, user
2) Checking for number purchased > 0
3) Checking for number purchased <= current in stock
Added close statements to fix memory leak.
Server kept crashing due to OutOfMemoryException.
Fixed primary key issue where no future transactions could be made

Added a trans_id primary key
Changed get all transactions code to reflect new field
Merge branch 'test' of https://github.com/d2dcontre/Bluemoon.git into purchasing
Merge branch 'master' of https://github.com/d2dcontre/Bluemoon