* set price currency for open orders from brokerage setup handler, remove setters from brokerage
* order already has price currency being set by brokerage transcation handler
* remove as overwritten by BrokerageSetupHandler.GetOpenOrders
* refactor because can't use internal setters in private repos
* refactor, use ctor to set attributes
* remove redundant broker dependency
(cherry picked from commit 57b071eb174ca9fe857021ebffa7a546834e86f7)
* check limit price for limit order instead for checking price
* add price agrument for MarketOrder
* remove, not required anymore
* AddUnrequestedSecurity should not return null
* assert string in not null cases
Ronit Jain
ad34429014