Add close toggle action to drawer

Problem
It is not obvious to user to understand how to collapse/open drawer.

Proposed solution
Add an action button with:

• attached to the right side of drawer
• middle vertically
• appears only on mouse hover (the drawer and left menu)
• appears only if a left menu item is selected
• toggle between collapse and open accordingly (only to close drawer)
• not displayed on small screen (drawer overlay situation)

Solution to implement

• only display drawer toggle when drawer is opened.
• only display drawer toggle on mouse hover (over drawer).

Mockup included as attachment.