BUG: Confusing UI in investigations overview

[jlstro]

Describe the bug Not a bug, but a poor UI choice that should be fixed: The landing page of an investigation lists its entity types in the sidebar on the left. Clicking on any of them leads the user to the manual entity input form.

To Reproduce Steps to reproduce the behavior:

1. Got to any investigation that has ftm entities in it
2. Click on the entity type in the sidebar

Expected behavior The expected behaviour is to see all entities of this specific type as a filtered search result. The functionality to manually add entities should live somewhere else.

Screenshots