More shortcuts for window switcher

The window switcher should have more shortcuts listed, instead of just showing the ones to switch windows.

This Window->Rename: maybe enter
This Window->Close: cmd-shift-w
New Window: cmd-n
New Private Window: cmd-shift-n

Requires Orion version 0.99.109.1.1-beta (WebKit 613.1.12)

OK we can show shortcuts for those items that we have

Close
New Window
New Private Window