Idea to add: Hide left "tree bar", and "notes bar" by keybord-shortcut

[mrutkowsk]

First thank You for Your awesome program.
Reasons. When I do research, often I split screen and left part is open Firefox with article, and right part is open masscode.
Problem I have is "treebar" and notes bar are taking significant portion of the designated area and would be super beneficial to have a feature to hid them by shortcut or some simple button accessible from everywhere .

Goal:
when working on single note, to be able to see just a note. real-estate on small monitors / laptops is important, and this would be very beneficial to everybody who is using Your software on regular basis like me.

Regards :)