- Apply context menu action only to currently visible annotations (i.e., respect annotation filter)

- Add TODO to change interface of IAnnotationValueProvider::getContextMenuEntries(): The method should be based on another method in IAnnotationValueProvider that returns a <String, BiConsumer> whose BiConsumer defines the action to apply to a single annotation entry. This ensures uniform iteration over the affected annotation entries, while providing the flexibility to enable custom iteration schemes
- Minor cleanup
  - Perform all modifications of an action in a single command
  - Re-update of annotation view only it was enabled before issuing the command 
refs 2361