Moved Operations together
Merged 'master'.
Removed useless getters ans setters
Added back some getters/setters
Namespace error
Moved Transaction
Added BuyTransaction
Fixed compatibility problem wth client
Operations now store the old value instead of the new one
Modified test scripts
Added back getters/setters (again)
Added OperationRepository that can cancel Operations
Transactions can now be canceled
Added TransactionRepository
Improved Transaction modification
Merged 'master'.

Conflicts:
	src/BR/BarBundle/Entity/Account/Account.php
	src/BR/BarBundle/Entity/Operation/Operation.php
	src/BR/BarBundle/Entity/Operation/Transaction.php
	src/BR/BarBundle/Entity/Stock/StockItem.php
	src/BR/BarBundle/Entity/Stock/StockOperation.php
Merge remote-tracking branch 'origin/feature/transaction-system'

Conflicts:
	src/BR/BarBundle/Entity/Account/Account.php
	src/BR/BarBundle/Entity/Stock/StockItem.php
Merge remote-tracking branch 'origin/master'

Conflicts:
	src/BR/BarBundle/Entity/Account/AccountOperation.php
	src/BR/BarBundle/Entity/Operation/Operation.php
	src/BR/BarBundle/Entity/Operation/Transaction.php
	src/BR/BarBundle/Entity/Stock/StockItem.php
	src/BR/BarBundle/Entity/Stock/StockOperation.php
Revert "Merge remote-tracking branch 'origin/master'"

This reverts commit fd2bf697cebadfdbe14e6abefe09dd4b1cb80526, reversing
changes made to 93d8c511a5f217994faced3f0c243da7fe327ec2.