Fixes issues resubscribing to reference data which sends 0 length updates and also correctly establishing which pairs can be kept in the UI
Fixes issues resubscribing to reference data which sends 0 length updates and also correctly establishing which pairs can be kept in the UI

AdaptiveConsulting/ReactiveTraderCloud,AdaptiveConsulting/ReactiveTraderCloud,AdaptiveConsulting/ReactiveTraderCloud,AdaptiveConsulting/ReactiveTraderCloud