Service that returns rates for lotto client.
	modified:   Resources/config/doctrine/Currency.orm.xml
	modified:   Resources/config/doctrine/Rest.orm.xml
	modified:   Resources/config/doctrine/Transaction.orm.xml
	change float to decimal
	modified:   Entity/BetLine.php
	add few getters
	modified:   Entity/Currency.php
	new file:   Tests/Validator/AbstractValidatorTest.php
	new file:   Tests/Validator/StaticLimitValidatorTest.php
	new file:   Validator/StaticLimit.php
	new file:   Validator/StaticLimitValidator.php
	Static validation of bet's possible win.
	new file:   Tests/Validator/MinimumLimitValidatorTest.php
	new file:   Validator/MinimumLimit.php
	new file:   Validator/MinimumLimitValidator.php
	Validation of minimum bet amount.