When searching, removing the content of the search field will show no items.

To Reproduce
Steps to reproduce the behavior:

1. Write some stuff in the search box
2. Erase those stuff
3. No item is shown

Expected behavior
Has the search box is empty, I except to see all the items

Desktop (please complete the following information):

• macOS: 10.14.5
• Version 0.7.9

Additional context
I believe we should not have a two listing view (search and "normal") but only one, simply display all the item when the search box is empty. I noticed a lot of strange behaviors in "search mode" like when i try to add an item by drag&drop from the browser. Also suddenly showing the "group" is kind of strange as I do not use this features.