"New Window" action should directly open the file chooser dialog
Summary
No open button somewhere in the UI when a document is already open.
Description
When Papers is first launched, there is an Open…
button on the middle of the welcome page.
When a document is already open, it is weird to first click on New window
and then Open…
just to open another document.
Hopefully CTL+O is more straightforward, but shortcuts are just shortcuts.
(Evince was not better for that).