Empty project structure tabs do not give controls or hints how to fill them #41
Description
User Story: As a user I want to understand how to interact with the program by looking at the UI.
Current state: The Project structure tabs are initally empty. This makes exploring the interface difficult as it is clear that there should be content, but it is unclear how to get it there. The needed commands are avaliable via menus or right click, but users need to find that out themselves.
Possible Solution: The tabs could each carry a button "import" or "create" so the list and the interactions that concern it are closely together. If it is not possible to add entries to the tab at the moment, a text next to the button could point this out.
A more simple solution might be having a help text that appears in the tabs empty state that gives the user a hint of what needs to be done.