Handle when dependent table is not yet loaded

[naleeha]

Feature Request

Description of Problem:

• When using Basket Trading create basket, sometimes the drop down is missing as Basket table is not loaded yet
• Sometimes when you create a basket trade, its empty because basket constituents have not been loaded yet

Potential Solutions:

Data table should have concept of isLoaded/ready
UI should check or subscribe to this status and ensure necessary data is ready before allowing users to use certain features