Currently these is only one way to open context menu for playlist from keyboard: press F10, press right arrow for times.
This patch provides way to open track list context menu from a keyboard with keyboard button "context menu".
The following behavior was introduced. Context menu shown near first of selected songs thats are visible. If none of them visible - table will be scrolled to show first of selected. If first of visible selected songs is visible only partially - table will be scrolled to fit it.