REACH-81 Bottom left search sometimes only shows Flood nodes

Removed fallback to hardcoded nodes, this is inconsistent to use them in DynamoApp.js, which should use Dynamo Server for all data fetching and computations
The main idea of this change is to remove fallback on hardcoded nodes definition. This is illogical for Flood<->Dynamo application. So I removed timeout and check for SearchElements array length