The grid context menu's Add to Album submenu listed only the existing plain
albums, so in a library without one it came up empty. The Photo menu's
submenu already ends with New Album…, and album.create adds the selection
by default; the context menu now has the same entry (after a separator
when albums exist). The submenu and the entry are registered as
button:contextAddToAlbum / button:contextNewAlbum for the control channel.
Test: right_click_add_to_album_offers_a_new_album_when_there_is_none
deletes every plain album, right-clicks a thumbnail, hovers Add to Album,
clicks New Album…, names and confirms it; the album exists and holds the
photo. Fails on main with "no widget button:contextAddToAlbum".
Jason Baldwin
4721627d31