When selection/selected node(s) properties change in Application window, all
selection-aware actions update their enabled/disabled state. Since this code is
performed synchronously in EDT, it could block UI for significant time,
especially when using JMX connection to resolve the state.
This is a serious performance problem and should be fixed by updating action
states in parallel outside of EDT. Probably there could be two types of actions
- synchronous which update their state immediately and asynchronous updating the