As user I want to have possibility to stage and unstage changes to commit
Rework top diff in tree (should be pure diff between HEAD and summary staged and unstaged changes)
Make possible to stage changes in top diff in tree
Make top diff visible only when there are staged or unstaged changed
**As user I want to have possibility to stage and unstage changes to commit**
* Rework top diff in tree (should be pure diff between HEAD and summary staged and unstaged changes)
* Make possible to stage changes in top diff in tree
* Make top diff visible only when there are staged or unstaged changed
As user I want to have possibility to stage and unstage changes to commit